Medicinal plants, traditional medicine, markets and management in far-west Nepal
© Kunwar et al.; licensee BioMed Central Ltd. 2013
Received: 18 November 2012
Accepted: 7 April 2013
Published: 12 April 2013
Modern therapeutic medicine is historically based on indigenous therapies and ethnopharmacological uses, which have become recognized tools in the search for new sources of pharmaceuticals. Globalization of herbal medicine along with uncontrolled exploitative practices and lack of concerted conservation efforts, have pushed many of Nepal's medicinal plants to the verge of extinction. Sustainable utilization and management of medicinal plants, based on traditional knowledge, is therefore necessary.
After establishing verbal informed consent with participating communities, five field surveys, roughly 20 days in duration, were carried out. In all, 176 schedules were surveyed, and 52 participants were consulted through focus group discussions and informal meetings. Altogether, 24 key informants were surveyed to verify and validate the data. A total of 252 individuals, representing non-timber forest product (NTFP) collectors, cultivators, traders, traditional healers (Baidhya), community members, etc. participated in study. Medicinal plants were free-listed and their vernacular names and folk uses were collected, recorded, and applied to assess agreement among respondents about traditional medicines, markets and management.
Within the study area, medicinal herbs were the main ingredients of traditional therapies, and they were considered a main lifeline and frequently were the first choice. About 55% plants were ethnomedicinal, and about 37% of ethnomedicinal plants possessed the highest informant consensus value (0.86–1.00). Use of Cordyceps sinensis as an aphrodisiac, Berberis asiatica for eye problems, Bergenia ciliata for disintegration of calculi, Sapindus mukorossi for dandruff, and Zanthoxylum armatum for toothache were the most frequently mentioned. These species possess potential for pharmacology.
Medicinal plants are inseparable from local livelihoods because they have long been collected, consumed, and managed through local customs and knowledge. Management of traditional therapies is urged, because the therapies are empirically and knowledge based, often culturally inherited and important to pharmacology and local livelihoods. However, traditional therapies are currently being eroded due to changing lifestyles, perceptions, social transformations, and acculturation.
KeywordsMedicinal plants Indigenous use Sustainable management Baidhya Baitadi district Nepal
Nepal is ranked as 9th among the Asian countries for its floral wealth with an estimated 9,000 species of flowering plants . So far, 6,653 species of flowering plants have been reported . Among these, about 50% fall under the rubrics "useful"  and "ethnobotanical" , and about 25%–50% are ethnomedicinals [5, 6]. Catalogues have recorded 1,792  to 2,331  useful medicinal and aromatic plants in Nepal, reporting their importance in alleviating human suffering because they have long been used for subsistence, home remedies, and traditional therapies [5–8]. These plants are also important for local livelihoods  and income generation , and they do fetch higher market prices .
National and regional demands for herbal medicine are accelerating [12, 13], and globalization of herbal medicine, along with uncontrolled exploitative practices and lack of concerted conservation efforts, now threaten the country’s medicinal plants [14, 15]. Numerous drugs have been introduced to international markets  through validation of traditional medicines , indigenous therapies [18, 19], and ethnopharmacological practices . Sustainable utilization and management of medicinal plants based on traditional knowledge is therefore necessary. It is imperative that the medicinal plants, their traditional uses, and management practices be catalogued as part of a larger conservation effort toward "rescuing a global heritage" . This effort should acknowledge empirical data and ethnoecological knowledge [22, 23]. Far-west Nepal is the least studied area in Nepal . The present study was thus an attempt to catalogue the important medicinal plants of Far-west Nepal along with their traditional uses and management interventions.
Three districts along the western border of Nepal—Baitadi, Darchula, and Dadeldhura—were selected for the present study. The districts extend between 29°01’–30°15’ N latitude and 80°15’–81° 09’ E longitude; their elevation ranges between 257 m and 7132 m above sea level. In Dadeldhura, the following villages were visited: Jogbudha, Rupal, Sirsha and Sadani. In Baitadi, the villages of Siddeswor, Siddnath, Patan, and Pancheswor were visited. In Darchula, the villages of Maikholi, Khar, Khalanga, Rapla, Dumling, and Gokuleswor were visited. Community forests and their user groups were consulted in the villages of Sigas, Rameswor, Madhu, Bhumi Raj and Trishuli (Baitadi district); Tham and Dumling (Darchula district); and Shivsundari, Trishuli Mahila, Parshuram, and Siddnath (Dadeldhura district). National forests were assessed at Jogbudha and Deurali (Dadeldhura district); Pancheswor and Melauli (Baitadi district); and Gokuleswor and Rapla (Darchula district). Local markets and traders were consulted in Amargadhi and Bagarkot (Dadeldhura district); Khalanga and Dumling (Darchula district); and Khodpe, Patan, and Melauli (Baitadi district). Due to variations in altitude, topography, and bio-climate in Far-west Nepal, the diversity of medicinal plants and knowledge of their utilization varied widely.
Field surveys and data collection
After establishing verbal informed consent with the participating communities, five field surveys, roughly 20 days in length, were carried out in different seasons: Spring surveys were conducted in May 2006 and March–April 2008; summer surveys were conducted in August 2009; and winter surveys were conducted in December 2006 and February 2007. Field visits were not carried out in Autumn, because it is festival season in Nepal. The primary methods of data collection consisted of group discussions, informal meetings, schedule surveys, and field observations. In all, 176 schedules were surveyed and 52 participants were consulted in focus group discussions and informal meetings. Informal meetings were held in villages during the evening, while team members were staying with local communities. Altogether, 24 key informants were surveyed to verify and validate data and information . A total of 252 individuals, representing NTFP collectors, cultivators, traders, traditional healers (Baidhya), community members, etc. participated in the study. In particular, elderly people, forest guards, and women representing different ethnic groups, castes, and occupations were encouraged to participate. Among the participants, 60% were Kshetri, 20% Brahmin, 12% Janajati (Chaudhary, Mahar, etc.) and 8% Dalits (Chuhar, Bijale, Lawad, Pariyar etc.). Twenty one percent of participants were women. There were altogether 88% respondents from Kshetri, Brahmin, and Dalits, and the similar account of ethnic groups was also found in three study districts .
All species encountered during participatory field observations were free-listed, and vouchers of medicinal plant species were collected during the day and displayed in the evening for discussions. Most of the species were identified in the field using references [27, 28]. Common species that were frequently seen, spot-identified by study team members and local assistants, and well known by their dialect names were used only for discussion; no voucher specimens were collected for further identification. The remaining unidentified species were vouchered and stored in the National Herbarium and Plant Laboratories (KATH), Godawari, Lalitpur, Nepal. The collection of voucher specimens, along with additional information, was facilitated by local assistants. Data and information were sought on the interest of collectors/cultivators, their household economy, and their patterns of use and management of medicinal plants, etc. A wealth index was established, and active involvement of people in medicinal plant cultivation, collection and trade, as well as the net cash income of consecutive two years (2006 and 2007), were analyzed following the literature [29–32]. Vernacular names and folk uses of voucher specimens were collected and used to assess consensus among respondents . Matching information from at least three respondents (mentions) was counted as a common response for analysis. The species were assessed for informant consensus value (ICV), and species with more than 0.85 ICV were considered for further analysis.
Results and discussion
Diseases/disorders, plant parts in use and mode of preparations
Category and diseases/disorders
Total number of species used
Specific disorder and species and its highest mentions and IC value
NVS - Memory longevity, migraine, epilepsy, laxative, aphrodisiac, tonic, stimulant
Aphrodisiac – Cs (50) ICV = 1
Epilepsy – Ng (31) ICV = 0.97
Laxative – Pe (28) ICV = 0.97
OTH - Pesticidal, repellant, paralysis, toothache
Pesticidal – Ac (42) ICV = 0.96
Toothache – Za (45) ICV = 0.95
Paralysis – Ca (24) ICV = 0.96
DIG - Anthelmintic, nausea, vomiting, diarrhea, gallstone, indigestion, dysentery, gastric trouble
Gall stone – Bc (43) ICV = 0.95
Anthelmintic – VJ (32) ICV = 0.95
Nausea/vomiting – Ct (34) ICV = 0.95
OPTH - Eye disease
Eye complaints - Ba (34)
ICV = 1
Eye complaints – Pn (31) ICV = 0.95
Eye complaints – Ap (31) ICV = 0.95
DER - Scabies, skin diseases, allergy, moles, hair problems
Hair problems - Sam (34) ICV = 0.93
Scabies – Cop (25) ICV = 0.93
Skin promlem – Pz (25) ICV = 0.93
MSK - Antispasmodic, sprain, fracture, arthritis, rheumatism
Arthritis – Jc (33) ICV = 0.96
Sprain – Bv (32) ICV = 0.96
Fractures – Ud (32) ICV = 0.96
INJ - Cuts, wounds, sore, inflammation
Cuts/wounds - Dh (31) ICV = 0.86
Wounds – Cas (31) ICV = 0.86
Cuts – Eph (31) ICV = 0.86
GUS - Urinary complaints, gonorrhea, syphilis, diuretics
Diuretics – Pe (31) ICV = 0.92
Diuretics – Ms (31) ICV = 0.92
Urinary complaints – Ach (26) ICV = 0.92
RES - Asthma, pneumonia, bronchitis, jaundice, cough/cold
Jaundice – Cr (27) ICV = 0.91
Pneumonia – Mh (24) ICV = 0.91
Asthma – Ms (16) ICV = 0.91
INF - Burn, scald, boil, earache, fever
Fever – Sc (26) ICV = 0.90
Burns – Cn (19) ICV = 0.90
Boils - Pr (19) ICV = 0.90
PRG – Lactation, easy delivery
Easy Delivery - Ari (23) ICV = 0.97
Lactation – Ar (21) ICV = 0.97
CVC - Bleeding, blood disorders, liver disorders, spleen disorders, jaundice, hemorrhage
Blood disorders – Mk (22) ICV = 0.94
Haemorrhage – Ari (21) ICV = 0.94
Liver disorder – Mo (15) ICV = 0.94
POS - Antidote, snake bite, scorpion sting, fish stupefying
Snake bite – Pp (18) ICV = 0.90
Scorpion sting – Acv (18) ICV = 0.90
Antidote – Asp (15) ICV = 0.90
Collection of medicinal plants
Community forests were the main sources of collection of medicinal plant products. We recorded that 49.5% collections were gathered from community forests and 18.5% from government-managed forests. The latter have been exploited as open-access free commodities, therefore their contribution to furnishing provisional products to local communities has been gradually declining. We found that only about 33% of the collections were used for subsistence (primarily as ingredient for folk remedies and food). The rest (about 67%) was sold, thanks to increasing market prices of the wild crafted products. Collection for the market was the predominant reason behind collection in Nepal  and India . Marketing of medicinal plant products is important to address the need for household commodities; the study area is rural and distant from road transport.
Since forests of the Himalaya are the richest habitat for medicinal plants  and a common property resource in Nepal , Dalits and Janajati groups within the study area were frequent collectors, and they gathered a disproportionate amount of forest products—particularly medicinal plants to address their subsistence and accessory needs. The overall increasing trend in collection and consumption was 16%. The increase in the number of collectors per annum was about 10% for the Brahmin and Kshetri, 35% for the Janajati, and 40% for the Dalits. The trend was consistent with their dependency, as the Dalits are more dependent on forests . Such increases were attributed to the expansion of commercial demand for medicinal plants and higher market prices.
All family members of local farmers and traditional healers were generalist collectors, but their children and elders were sometimes used in collection of forest products from nearby and accessible areas. Most household heads that have been collecting plants/products since infancy use their children for support. We found that about 20% of the collectors were children, but their involvement was limited, particularly to private farmlands, lower elevations, and accessible areas. Children were guided to collect produce and products of Prinsepia utilis, Rhus parviflora, Murraya koenigii, Zanthoxylum armatum, Berberis asiatica, Centella asiatica, etc. In particular, children were trained to collect the leaves and fruits of useful species. Children and elders were most seldom used in the collection of high-value medicinal plants and products found at higher elevations, such as Cordyceps sinensis, Morchella species, etc., thanks to the climatic and physiographic adversity associated with their collection. The species valued for their rhizomes and bark were commonly uprooted or debarked by elderly groups. There was a range of collection of medicinal plants in each household (N = 252) from 0.6 Kg to 720 Kg of fresh products.
Besides forests, private farmlands were also important in the supply of medicinal plant products. About 32% of collections of medicinal plant products were from private farmlands. In some private farmlands, plants such as Sapindus mukorossi, Z. armatum, Phyllanthus emblica, and Swertia chirayita, which fetch good market prices, were intentionally cultivated. Other medicinal plants that occur naturally in farmlands were Pyrus pashia, Ficus hispida, Acmella calva, Amaranthus viridus, Choerospondias axillaris, etc. These plants were under-utilized .
Marketing of medicinal plants
List of species/products traded from districts
Common in all districts
An average of 20,000 tons of raw materials, worth between $8.6–$27 million ($US) annually, are traded and/or exported from Nepal [43, 44]. However, official records only record a much lower volume (25%–50%). Of the five political divisions in Nepal (East, Central, West, Mid-west and Far-west), the Far-west contributes about 20% of the total volume of medicinal and aromatic plants traded from country. The three study districts (Baitadi, Dadeldhura, and Darchula) alone contribute 17.4% of the country’s total traded volume; this accounts for 78% of the Far-west trade . Among the three study districts, Baitadi is rich in medicinal and aromatic plants and alone contributes about 10% of the national traded volume. S. mukorossi and Z. armatum were the species traded in the largest volume in the country, and both the species are indigenous to western Nepal.
Income from medicinal plants comprised a significant portion (20%) of the annual cash income of local people in study area. It was computed against different wealth indices, and it represented the highest percentage of income for the Janajati and Dalits groups, which was consistent with their gradual increase in numbers per annum. The annual increase in income from medicinal plant collection and cultivation was shown to go from N.Rs. 4,223 in 2006 to N.Rs. 5,802 in 2007. A similar increase was also noted by Acharya and Tamrakar  from N.Rs. 1,326 in 2005 to N.Rs. 9,290 in 2009. In other parts of Nepal, the contribution of medicinal plants to annual cash income was about 15% [43, 44], and in some cases was as high as 30%–50% .
A total of 49 species possessed an ICV more than 0.85, and all these species possessed matching information from at least 20 respondents (mentions). Use of plants for treatment of 60 ailments in 13 disease categories was recorded following Phillips and Gentry  (Table 1). Digestive system disorders were frequent and their treatment with locally available medicinal plants was the most consistent with the findings of Kumar et al.. Informants described the usefulness of 44 species for digestive disorders (Table 1). There was a broad consensus for the use of C. sinensis as an aphrodisiac and B. asiatica for eye problems. Furthermore, Bergenia ciliata was often mentioned for the treatment of the disintegration of calculi, S. mukorossi for dandruff, and Z. armatum for toothache; these treatments share the highest consensus value. This high ICV indicates that use of these species is widely known in study area, and most of the respondents concurred regarding the particular usage. This paper takes the position that informant consensus is a reliable method of selecting medicinal plant for pharmacological evaluation .
Traditional uses of C. sinensis as a tonic, aphrodisiac, immuno-stimulant, and for retention of memory coincided with previous pharmacological findings. The adenosine found in C. sinensis has widespread effects on circulation of blood, cerebral and coronary effects [49, 50], prevention of cardiac arrhythmias , inhibition of neurotransmitter release , potentiating immune system , and antitumor activity . The Ayurvedic and folk usage of B. ciliata as an antidiarrheal and antidysenteric [55, 56] also corroborated earlier reports [6, 9]. The fruits of Z. armatum were commonly used to treat toothache in folklore and Ayurvedic medicines, and their anti-inflammatory  and antibacterial  actions have been substantiated. The use of root bark extract of B. asiatica to treat conjunctivitis was common [55, 59], and its effectiveness as an antimicrobial , anesthetic, antihypertensive, and pigment inducer  has been clinically verified. Sapindus fruits were commonly applied to fight dandruff. Sapindus’ emetic and expectorant properties have previously been mentioned in the Ayurveda  and antichlamydiac property in pharmacology . The folk use of Cuscuta reflexa for jaundice was supported by pharmacological studies, showing it possesses strong antibacterial actions .
Plant parts used and mode of preparation
Home herbal remedies, folklore medicine, and the Baidhya healing system are commonly found in the study area. The persistence of these traditional therapies is due to the high cost of modern medicine and the absence of trained physicians. It is estimated that there is one physician per 30,000–100,000 people in Nepal , whereas there is at least one healer for every 100 people . Data show that there is at least one health worker for every 670 people in Baitadi, 663 in Dadeldhura, and 509 in Darchula district . Interest in traditional therapies has gradually increased over the recent years [6, 39, 69]. All these reasons foster the persistence of traditional therapies in the study area. This is reinforced by the preference of local people for traditional medicine, thanks to their belief in its effectiveness and to a lack of alternative choices [70, 71]. All these therapies were culturally intertwined. The number of plants used as ethnomedicines was also higher in the mountains of the Nepalese Himalayas . However, traditional knowledge and the plants for folk therapies are gradually being endangered due to changing lifestyles, perceptions, social transformations, and acculturation.
The many uses of medicinal plants for trade and subsistence needs have led to conflict and overexploitation. An account of the multiple uses of medicinal plants that in turn threaten those very plants as a result of overharvesting has been noted in India . Deliberate forest fires and premature harvests endanger existing populations of medicinal plants. The quantity and quality of medicinal plants within the study area have been degraded by market-led premature exploitation and climate change. The changes to plant phenology, range, and growth behavior as a result of climate change also jeopardize species survival and quality products [73, 74]. Price differentials between wild and cultivated products, which reflect the demand for wild crafted products, encourage unsustainable collection. Over-harvesting was also threat to many indigenous medicinal plant species, such as Z. armatum, N. grandiflora, A. rivularis etc. The collection of medicinal plants in a sustainable manner is imperative for development and conservation .
Medicinal plants play a substantial role in the life support systems of local communities of Far-west Nepal. With increasing acceptance and use of medicinal plants in traditional therapies, and with increasing commercial demands over the years, the consumption and collection of medicinal plants is accelerating and thus endangering the extant populations. Over-harvesting threatens many indigenous medicinal plant species, such as Z. armatum, N. grandiflora, A. rivularis etc. Collection and consumption of medicinal plants in a sustainable manner is an integrated process with potential for development and conservation. Indigenous knowledge of medicinal plant use for traditional therapies and sustainable management in Nepal is empirically based, culturally inherited and intertwined, and important to pharmacology and local livelihoods. However, it is currently being eroded due to changing lifestyles, perceptions, social transformations, and acculturation. The conservation and sound management of indigenous knowledge of medicinal plants is thus strongly urged.
The authors wish to thank the Canadian Center for International Studies and Cooperation (CECI) and the International Center for Integrated Mountain Development (ICIMOD), both located in Kathmandu, for providing facilities for field studies and data analysis. RMK is grateful to the William L. Brown Center at the Missouri Botanical Garden for providing financial support to carry out field visits, conduct a literature review, and do the data analysis. The authors are also thankful to two anonymous reviewers and B Ponmann to review this manuscript for their helpful comments.
- Bhattarai KR, Maren IE, Chaudhary RP: Medicinal plant knowledge of the Panchase region in the middle hills of the Nepalese Himalaya. Banko Janakari. 2011, 21 (2): 31-39.Google Scholar
- Kunwar RM, Shrestha K, Dhungana SK, Shrestha PR, Shrestha KK: Floral Biodiversity of Nepal: an update. Journal of Natural History Museum. 2010, 25: 295-311.Google Scholar
- Uprety Y, Asselin H, Boon EK, Yadav S, Shrestha KK: Indigenous use and bio-efficacy of medicinal plants in the Rasuwa District, Central Nepal. J Ethnobiol Ethnomed. 2010, 6: 3-10.1186/1746-4269-6-3. http://www.ethnobiomed.com/content/6/1/3,PubMed CentralView ArticlePubMedGoogle Scholar
- Kunwar RM, Bussmann RW: Ethnobotany in the Nepal Himalaya. J Ethnobiol Ethnomed. 2008, 4: 24-10.1186/1746-4269-4-24. http://www.ethnobiomed.com/content/4/1/24,PubMed CentralView ArticlePubMedGoogle Scholar
- Manandhar NP: Plants and People of Nepal. 2002, Oregon, USA: Timber press Inc. Portland, 599-Google Scholar
- Kunwar RM, Nepal BK, Kshhetri HB, Rai SK, Bussmann RW: Ethnomedicine in the Himalaya: a case study from Dolpa, Humla, Jumla and Mustang district of Nepal. J Ethnobiol Ethnomed. 2006, 2: 27-10.1186/1746-4269-2-27. http://www.ethnobiomed.com/content/2/1/27,PubMed CentralView ArticlePubMedGoogle Scholar
- Rokaya MB, Munzbergova Z, Shrestha MR, Timsina B: Ethnobotanical study of medicinal plants from the Humla district of western Nepal. J Ethnopharmacol. 2010, 130: 485-504. 10.1016/j.jep.2010.05.036.View ArticlePubMedGoogle Scholar
- Baral SR, Kurmi PP: Compendium of medicinal plants in Nepal. 2006, Chabahil, Kathmandu, Nepal: Rachana Sharma publishers, 534-Google Scholar
- Shengji JP: Ethnoecological approaches of traditional medicine studies: some experiences from Asia. Pharmacoceutical Biology. 2001, 39: 74-79.Google Scholar
- WHO: WHO traditional medicine strategy 2002–2005. 2002, Geneva: World Health OrganizationGoogle Scholar
- Tiwari S, Robinson J, Amatya G: Community based approaches to conservation and management of MAPs for sustainable livelihood in Doti district, West Nepal. Proceeding of local experience-based national strategy for organic production and management of MAPs/NTFPs in Nepal. Edited by: Bhattarai NK, Karki M. 2004, Kathmandu: IDRC, MAPPA and Government of Nepal, 97-127.Google Scholar
- WWF: Medicinal plant trade: wildlife trade. 2000, World Wildlife Foundation, http://wwf.panda.org/who_we_are/wwf_offices/india/?uProjectID=9Z0718,Google Scholar
- Karki M: The organic production of medicinal and aromatic plants: a strategy for improved value-addition and marketing of products from the Himalayas. Proceeding of wise practices and experimental learning in conservation and management of Himalayan medicinal plants. Edited by: Thomas YA, Karki M, Gurung K, Parajuli D. 2005, Kathmandu, Nepal: Ministry of Forests and Soil Conservation, 56-69.Google Scholar
- Singh MP, Malla SB, Rajbhandary SB, Manandhar A: Medicinal plants of Nepal – retrospects and prospects. Economic Botany. 1979, 33: 185-198. 10.1007/BF02858287.View ArticleGoogle Scholar
- Olsen CS, Larsen HO: Alpine medicinal plant trade and Himalayan mountain livelihood strategies. The Geographical Journal. 2003, 169: 243-254. 10.1111/1475-4959.00088.View ArticleGoogle Scholar
- Sharma PP, Mujundar AM: Traditional knowledge on plants from Toranmal Plateau of Maharastra, India. Indian Journal of Traditional Knowledge. 2003, 2: 292-296.Google Scholar
- Bussmann RW: Ethnobotany and biodiversity conservation. Modern trends in applied terrestrial ecology. Edited by: Ambasht RS, Ambasht NK. 2002, Kluwer Publishers: New York, 345-362.Google Scholar
- Bhattarai NK: Biodiversity-people interface in Nepal, Medicinal Plants for Forest Conservation and Health Care. 1997, FAO and UN Rome, Italy: NWFP Bulletin, 11-Google Scholar
- Patwardhan B, Warude D, Pushpangadan P, Bhatt N: Ayurveda and traditional Chinese medicine: a comparative overview. eCAM. 2005, 2 (4): 465-473.PubMed CentralPubMedGoogle Scholar
- Kunwar RM, Uprety Y, Burlakoti C, Chowdhary CL, Bussmann RW: Indigenous use and ethnopharmacology of medicinal plants in far-west Nepal. Journal of Ethnobotany Research & Applications. 2009, 7: 5-28.Google Scholar
- Lambert J, Srivastava J, Vietmeyer N: Medicinal Plants: Rescuing a Global Heritage. 1997, USA: The World BankView ArticleGoogle Scholar
- Ramakrishnan PS, Chandrashekara UM, Elouard C, Guilmoto CJ, Maikhuri RK, Rao KS, Sankar S, Saxena KG: Mountain biodiversity, land use dynamics, and traditional ecological knowledge. 2000, New Delhi, India: Oxford and IBH Publishing CoGoogle Scholar
- Ghimire SK, McKey D, Thomas YA: Himalayan medicinal plant diversity in an ecologically complex high altitude anthropogenic landscape, Dolpo, Nepal. Environmental Conservation. 2006, 33: 128-140.Google Scholar
- Bennet L: Gender, caste and ethnic exclusion in Nepal: following the policy process from analysis to action. 2005, Arusha, Tanzania: Paper presented at the conference New Frontiers of Social policy: development in a globalizing world, http://siteresources.worldbank.org/INTRANETSOCIALDEVELOPMENT/Resources/Bennett.rev.pdf,Google Scholar
- Martin GJ: Ethnobotany: A methods manual. 2004, London: Earthscan PublicationsGoogle Scholar
- Dahal DR: Social composition of the population: case/ethnicity and religion in Nepal. Population monograph of Nepal. Central Bureau of Statistics, Government of Nepal, http://cbs.gov.np/wp-content/uploads/2012/Population/Monograph, 1,
- Polunin O, Stainton A: Flowers of the Himalaya. 1984, New Delhi-India: Oxford University Press, 580-Google Scholar
- Stainton A: Flowers of the Himalaya, a supplement. 1998, New Delhi-India: Oxford University Press, 86Google Scholar
- Kunwar RM: Ecology and economy of medicinal, aromatic and dye plants for sustainable livelihood, west Nepal: an assessment. 2007, Kathmandu, Nepal: Canadian Center for International Studies and Cooperation, 32-Google Scholar
- Acharya RP, Tamrakar R: Livelihood and poverty impacts of MAPPA project in west Nepal. 2009, Kathmandu, Nepal: International Center for Integrated Mountain Development (ICIMOD), 68-Google Scholar
- ANSAB: Market Assessment of Non Timber Forest Products in Darchula and Baitadi Districts, Far-west Nepal. 2003, Kathmandu: Asia Network for Sustainable Agriculture and BioresourcesGoogle Scholar
- CMAPSL: Conservation of medicinal and aromatic plants for sustainable livelihood project. Report. 2005, Kathmandu, Nepal: Canadian Center for International Studies and CooperationGoogle Scholar
- Trotter RT, Logan MH: Informant consensus: a new approach for identifying potentially effective medicinal plants. Plants in indigenous medicine and diet. Edited by: Ektin NL. 1986, Bedford, US: Redgrave Publication Co, 91-112.Google Scholar
- Kunwar RM, Duwadee NPS: Ethnobotanical notes on flora of Khaptad National Park, far-western Nepal. Himalayan Journal of Sciences. 2003, 1: 25-30.Google Scholar
- Narendran K, Murthy IK, Suresh HS, Dattaraja HS, Rabindranath NH, Sukumar R: NTFP extraction, utilization and valuation; a case study from the Nilgiri Biosphere Reserve, India. Economic Botany. 2001, 55: 528-538. 10.1007/BF02871715.View ArticleGoogle Scholar
- Ives JD: The theory of Himalayan degradation: its validity and application challenged. Mountain Research and Development. 1987, 7: 189-199. 10.2307/3673192.View ArticleGoogle Scholar
- Ostrom E: Governing and managing forests and other common property resources in a period of climate change. 2010, http://www.icimod.org/?q=719,Google Scholar
- Gaire D: Effectiveness and representation of poor, women and Dalitss in executive committee: process and achievement; a study from the buffer zone of Bardia National Park, Nepal. MSc thesis. 2007, Kathmandu, Nepal: Institute of Forestry, Tribhuvan UniversityGoogle Scholar
- Kunwar RM, Mahat L, Sharma LN, Shrestha KP, Kominee H, Bussmann RW: Underutilized plant species in far west Nepal. Journal of Mountain Science. 2012, 9: 589-600. 10.1007/s11629-012-2315-8.View ArticleGoogle Scholar
- Kunwar RM, Shrestha KP, Bussmann RW: Traditional herbal medicine in Far-west Nepal: a pharmacological appraisal. J Ethnobiol Ethnomed. 2010, 6: 35-10.1186/1746-4269-6-35. http://www.ethnobiomed.com/content/6/1/35,PubMed CentralView ArticlePubMedGoogle Scholar
- Bhattarai KR, Ghimire M: Commercially important medicinal and aromatic plants of Nepal and their distribution pattern and conservation measure along the elevation gradient of the Himalayas. Banko Janakari. 2006, 16 (1): 3-13.Google Scholar
- Srivastava D: Resources of Nepalese medicinal and aromatic plants: status and development. Plant Resources. 2009, 31: 127-131.Google Scholar
- Edward DM: Non-Timber Forest Products from Nepal: Aspect of the trade in medicinal and aromatic Plants. 1996, Kathmandu, Nepal: Ministry of Forests and Soil Conservation, 1-96. FORESC monographGoogle Scholar
- Subedi BP: Utilization of Non-Timber Forest Products: Issue and strategies for environmental conservation and economic development. 1997, Kathmandu, Nepal: Asia Network for Sustainable Agriculture and Bio-resourcesGoogle Scholar
- GoN: Hamro Ban (Our Forests). 2005, Babarmahal, Kathmandu, Nepal: Government of Nepal. Ministry of Forests and Soil ConservationGoogle Scholar
- Phillips O, Gentry AH: The useful plants of Tambopata, Peru: II. Additional hypothesis testing in quantitative ethnobotany. Economic Botany. 1993, 47: 33-43. 10.1007/BF02862204.View ArticleGoogle Scholar
- Kumar M, Sheikh MA, Bussmann RW: Ethnomedicinal and ecological status of plants in Garhwal Himalaya, India. J Ethnobiol Ethnomed. 2011, 7: 32-10.1186/1746-4269-7-32. http://www.ethnobiomed.com/content/7/1/32,PubMed CentralView ArticlePubMedGoogle Scholar
- Etuk EU, Mohammed BJ: Informant consensus selection method: A reliability assessment on medicinal plants used in north western Nigeria for the treatment of diabetes mellitus. African Journal of Pharmacy and Pharmacology. 2009, 3 (10): 496-500. http://www.academicjournals.org/ajpp/abstracts/abstracts/abstracts2009/October/Etuk%20amd%20Mohammed.htm,Google Scholar
- Berne RM: The role of adenosine in the regulation of coronary blood flow. Cancer Research. 1980, 47: 807-813.Google Scholar
- Toda S, Kumura M, Ohnishi M: Effects of phenolcarboxylic acids on superoxide anion and lipid peroxidation induced by superoxide anion. Planta Medica. 1991, 57: 8-10. 10.1055/s-2006-960005.View ArticlePubMedGoogle Scholar
- Pelleg A, Porter RS: The pharmacology of adenosine. Pharmacotherapy. 1990, 10: 157-174.PubMedGoogle Scholar
- Ribeiro JA: Purinergic inhibition of neurotransmitter release in the central nervous system. Pharmacol Toxicol. 1995, 77: 299-305. 10.1111/j.1600-0773.1995.tb01031.x.View ArticlePubMedGoogle Scholar
- Xu RH, Peng XE, Chen GZ, Chen GL: Effects of Cordyceps sinensis on natural killer activity and colony formation of B16 melanoma. Chin Med J. 1992, 105: 97-101.PubMedGoogle Scholar
- Chen YJ, Shiao MS, Lee SS, Wang SY: Effect of Cordyceps sinensis on the proliferation and differentiation of human leukemic U937 cells. Life Sciences. 1997, 60: 2349-2359. 10.1016/S0024-3205(97)00291-9.View ArticlePubMedGoogle Scholar
- Bajracharya MB: Ayurvedic medicinal plant and general treatments. 1979, Kathmandu, Nepal: Jore Ganesh Press Pvt. Ltd, 230-Google Scholar
- Dey AC: Indian medicinal plants used in Ayurvedic preparation. 1998, Dehra Dun, India: Bishen Singh Mahendra Pal SinghGoogle Scholar
- Kumar S, Ziereis K, Wiegrebe W, Muller K: Medicinal plants from Nepal: evaluation as inhibitors of leukotriene biosynthesis. J Ethnopharmacol. 2000, 70: 191-195. 10.1016/S0378-8741(00)00203-8.View ArticlePubMedGoogle Scholar
- Taylor RSL, Shahi S, Chaudhary RP: Ethnobotanical research in the proposed Tinjure-Milke-Jaljale Rhododendron conservation area, Nepal. Vegetation and society: Their interaction in the Himalayas. Edited by: Chaudhary RP, Subedi BP, Vetaas OR, Aase TH. 2002, Norway: Tribhuvan University, Nepal and University of Bergen, 26-37.Google Scholar
- Das B, Gupta K: Materia medica of Ayurveda based on Mandanapala’s Nighantu. 1994, New Delhi, India: B. Jain Publishers, 780-Google Scholar
- Iwasa K, Namba H, Lee DU, Kang SI: Structure–activity relationships of protoberberines having antimicrobial activity. Planta Medica. 1998, 64: 748-751. 10.1055/s-2006-957572.View ArticlePubMedGoogle Scholar
- Sabir M, Bhide MK: Study of some pharmacological activities of berberine. Indian Journal of Physiology and Pharmacy. 1971, 15: 111-132.Google Scholar
- Garg A: Effect of Calotropis procera (Ait.) R. Br. flower extract on testicular function of the Indian desert male gerbil Meriones hurrianae Jerdon: a biochemical and histological study. Indian Journal of Experimental Biology. 1979, 17: 859-862.PubMedGoogle Scholar
- Tiwari BR, Raut B: Screening of selected medicinal plants of Pokhara valley for their antimicrobial activities. Journal of Natural History Museum. 2009, 24: 16-20.Google Scholar
- Moore PD: Trials in Bad Taste. Nature. 1994, 370: 410-411.View ArticleGoogle Scholar
- Burlakoti C, Kunwar RM: Folk herbal medicines of Mahakali watershed area, Farwest Nepal. Medicinal plants in Nepal: An anthology of contemporary research. Edited by: Jha PK, Karmacharya SB, Chettri MK, Thapa CB, Shrestha BB. 2008, Kathmandu, Nepal: Ecological Society, 187-193.Google Scholar
- Gillam S: The traditional healer as village health worker. Journal of Institute of Medicine. 1989, 11: 67-76.Google Scholar
- WRI: World Resources – 2005. The wealth of the poor: managing ecosystems to fight poverty. 2005, World Resource Institute, USA, http://www.wri.org/publication/world-resources-2005-wealth-poor-managing-ecosystems-fight-poverty, http://pdf.wri.org/wrr05_dt_all.pdfGoogle Scholar
- Anonymous: District profile. 2010, Kathmandu, Nepal: Mega Research Center and PublicationGoogle Scholar
- Craker LE, Gardner ZE: Medicinal plants and tomorrow’s pharmacy. Medicinal and aromatic plants. Proc. Frontis Workshop on Medicinal and Aromatic Plants. Edited by: Bogers J, Craker LE, Lange D. 2006, Wageningen: Nucleus for Strategic Expertise Wageningen University and Research Centre, 29-41. Wageningen, The Netherlands, 17–20, April 2005Google Scholar
- Bhattarai NK: Traditional herbal medicines used to treat wounds and injuries in Nepal. Tropical Doctor. 1997, 27 (1): 43-47.PubMedGoogle Scholar
- Bhattarai NK: Medical ethnobotany in the Karnali Zone, Nepal. Economic Botany. 1992, 45 (3): 257-261.View ArticleGoogle Scholar
- Appasamy PP: Role of NTFPs in subsistence economy: The case of joint forestry project in India. Economic Botany. 1993, 47 (3): 258-267. 10.1007/BF02862292.View ArticleGoogle Scholar
- Sala O: Global biodiversity scenarios for the year 2100. Science. 2000, 287: 1770-1774. 10.1126/science.287.5459.1770.View ArticlePubMedGoogle Scholar
- Kunwar RM, Katuwal Y, Shrestha RD, Karki J, Shrestha K, Bussmann RW: Climate Change, Medicinal Plants and Ethnobotany: Observations and Review. Proceeding of first national youth conference on environment. 2010, Kathmandu, Nepal: Himalayan Alliance for Climate Change, 180-189. http://www.himcca.org,Google Scholar
- Hall P, Bawa KS: Methods to assess the impact of extraction of non-timber forest products on plant populations. Economic Botany. 1993, 47: 234-247. 10.1007/BF02862289.View ArticleGoogle Scholar
- GoN: Protected Plants of Nepal. 2001, Kathmandu, Nepal: Ministry of Forests and Soil Conservation, Forest regulation 1995 and its amendmentsGoogle Scholar
- HNCC: Prioritized medicinal plants for economic growth in Nepal. 2006, Kathmandu, Nepal: Herbs and NTFPs Co-ordination Committee, Department of Plant Resources, 125-Google Scholar
- Singh AG, Kumar A, Tewari DD: An ethnobotanical survey of medicinal plants used in Terai forest of western Nepal. J Ethnobiol Ethnomed. 2012, 8: 19-10.1186/1746-4269-8-19. http://www.ethnobiomed.com/content/8/1/19,PubMed CentralView ArticlePubMedGoogle Scholar
- Shrestha BB, Jha PK: Habitat range of two alpine medicinal plants in a trans-Himalayan dry valley, central Nepal. Journal of Mountain Science. 2009, 6: 66-77. 10.1007/s11629-009-0209-1.View ArticleGoogle Scholar
- Messerschmidt DA, Rayamajhi S: Upper slopes forest management in Kavre and Sindhupalchok districts, Nepal: a study on forest resource conditions and the potential for people’s participation. 1996, Nepal: Nepal Australia Community Forestry ProjectGoogle Scholar
- Craig S, Bista G: Himalayan healers in transition: Professionalization, identity and conservation among practitioners of gso br rig pa in Nepal. Proceeding of wise practices and experimental learning in conservation and management of Himalayan medicinal plants. Edited by: Thomas YA, Karki M, Gurung K, Parajuli D. 2005, Kathmandu, Nepal: Ministry of Forests and Soil Conservation, 411-433.Google Scholar
- Kunwar RM, Parajuli RR: Good governance in natural resource management: A case study from Dolpa district, Nepal. Banko Janakari. 2007, 17: 17-24.View ArticleGoogle Scholar
- Lama YC, Ghimire SK, Thomas YA: Medicinal plants of Dolpo: Amchi’s knowledge and conservation. 2001, WWF Nepal, Kathmandu, Nepal: People and Plants Program, 150-Google Scholar
- Kala CP: Current status of medicinal plants used by traditional Baidhya in Uttaranchal state of India. Journal of Ethnobotany Research & Applications. 2005, 3: 267-278.Google Scholar
- Uprety Y, Poudel RC, Shrestha KK, Rajbhandary S, Tiwari NN, Shrestha UB, Asselin H: Diversity of use and local knowledge of wild edible plant resources in Nepal. J Ethnobiol Ethnomed. 2012, 8: 16-10.1186/1746-4269-8-16. http://www.ethnobiomed.com/content/8/1/16,PubMed CentralView ArticlePubMedGoogle Scholar
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