Plants traditionally used to make brooms in several European countries

Background The research was carried out within the course of two years (2005–2006) in four countries from southern, southeast and eastern parts of Europe: Bulgaria, Italy, Macedonia and Romania. The data are collected mainly from Bulgaria and Italy and are compared with those from Macedonia and Romania. Methods The information was gathered largely from literature as well as field collected data and interviewed informants. A brief questionnaire, referring to the vernacular name, plant description, providing specimens from the plants and brooms, details on their use has been prepared and applied. Results The total number of species as brooms in the study areas is about 108. The list includes two fungi taxa which caused the so-called "Witches' brooms". A high species diversity of 106 taxa of vascular plants, belonging to 37 families and 74 genera, is established in the research area. The investigation includes data about scientific name, family, vernacular name, life form, status (wild or cultivated), used parts and place of use. The relations between the plant characteristics and broom specific shape and working qualities, details of the traditionally broom planting and making, the broom as a part of folklore, traditions and religious rituals are discussed. Conclusion Collected data show how ecological, geographical features and different cultures are related with the variety of plants traditionally used as brooms as well as details for their uses. The data about the variety of plants traditionally used to make brooms and the ways in which they are used according to the specific characteristics of the areas are important for ethnobotanical knowledge.


Background
The interest and knowledge of plants used by native people, called ethnobotany, have increased in recent years, and there is a lot of information throughout the world [1][2][3][4]. The field of study of plants used in household products is one of the most interesting ones and it is not always easy for species to be identified.
For centuries the brooms have been used for cleaning houses, ovens, fireplaces, yards, streets, as ritual tools as well as for some special functions. For a long period (before the 18th century), brooms were domestically produced and hand-made of tree branches, brushes, etc. The broom was an important tool in keeping the living area clean. Unfortunately, dust and ashes are part of life and perfect brooms do not exist. But since ancient times people's ambition to create better and better brooms has brought rich experience of used plants and brooms. This knowledge was passed on from generation to generation and so came to us.
For economic reasons, keeping cleanness in houses, areas around houses, farmyards, streets, etc. brooms are a daily necessity. Together with the use of technical instruments for cleaning streets and yards, brooms are still in use. Planting raw material and broom manufacture continue in present days.
A broom is a cleaning tool consisting of stiff fibres attached to (and roughly parallel to) a cylindrical handle -broomstick. Some shrubs (evergreen, semi-evergreen and deciduous) from the Fabaceae family -mainly Chamaecytisus, Cytisus and Genista species -are commonly referred to as brooms in Western Europe. The plants belonging to these genera show similar dense aerial parts, very small leaves and slender green stems.
The known data on plants that are used as brooms is part of ethnobotanical research in different regions or countries [6][7][8][9] as well as some surveys concerning the plants traditionally used for brooms, basketry practices and plaited crafts [10][11][12][13].
The original idea that brooms from different parts of the world should be collected has been realized at Laurent's World Broom Collection since 2002 at UMMA (University of Michigan Museum of Anthropology), USA, where several samples from Europe are stored. The material used for brooms is referred mainly as "plant material" and it is not classified [14,15].
The aim of this study is to determine and introduce the plants traditionally used as brooms -which are slowly dying out-in different cultures as well as in several European countries.

Methods
The research was carried out in four countries from southern, southeast and eastern parts of Europe. The study area range from the Italian Peninsula (that extends into the Mediterranean Sea) to the Balkan Peninsula as well as the continental parts located to the north (border on the Black Sea) (Fig. 1). Larger part of the study area includes neighbouring in geographic placement countries that have historical and cultural relations as well and mutually influence. They at one time have specific ecological conditions and national traditions. Since oldest time, their history and culture have been deeply influenced through contacts with the Mediterranean countries (as Italy). The data are collected mainly from Bulgaria and Italy and are compared with those from Macedonia and Romania. The study was carried out within the course of two years (2005)(2006).
The information is gathered largely from literature (old and newest written sources)  as well as field collected data (authors' observations) and interviewed informants. Information is gathered using non-structured interviews from informants living mainly in villages, age range 38-75 years, most of them are retired farmers. A brief questionnaire, referring to the vernacular name, plant description, providing specimens from the plants and brooms, details on their use has been prepared and applied. The Bulgarian common names are given according to Field guide to the vascular plants in Bulgaria [46,47]. The plant nomenclature is given according to Flora Europaea [48].
Voucher specimens of plants (original collected data) have been deposited in the Herbarium of Sofia University (SO), Bulgaria.
Hemicryptophytes species prevail (34), followed by chamaephytes (33) (evergreen shrubs (17) and shrubs (16)), therophytes (16) and phanerophytes (13) (Fig. 3). The structure of the life forms of the established species is according to the research areas' specific conditions. On the other hand the life form's structure corresponds to the plant's diversity with features suitable for certain broom qualities -strength and flexibility.
Witches' brooms are a special case. They are deformities on trees or shrubs as a result of infections by different agents. The rates of plant growth, size and symmetry are disrupted. A certain part of the plant may look like a bird's nest (closely packed distorted twigs) (Figs. 4, 5). These formations are very suitable in terms of shape, strength and flexibility for broom material [25]. In the past, mysterious and unexplainable occurrences were often blamed on witchcraft. Witches' brooms occur on many different woody plant species, including deciduous trees such as hackberry, maple, and willow, and conifers such as pine and spruce. At first, only the appearance of the shrub is affected, but continued feeding over a period of years Asteraceae Obiknoveno bezsmartniche [16,46] Map of the research area Figure 1 Map of the research area.
often stunts the honeysuckle's growth, eventually weakening it and contributing to the shrub's death [25]. Most of the species are wild plants (78.4%). Some of them are cultivated for different needs (10.8%) as food and ornamental, except Sorghum bicolor and Bassia scoparia which are cultivated only for making brooms. The main plant cultivated for brooms in the study area is Sorghum bicolor (on small areas). In Bulgaria the area for Sorghum cultivation never had exceeded thirty five thousand decare. One part of species is wild, but they meet together as well in a culture in the same area (9%). In Italy, the use of wild plants for making brooms is more common as a result of plant richness and national traditions. In other parts of study area the use of cultivated plants is wider.  (Table 1).

Ethymology (history of the names)
"M " (metla) is the Bulgarian name for broom. The diminutive name is " k " (metlichka), often used for smaller ones and in folklore tales and folklore songs, this is a proof of its great importance in people's daily customs and its position in their life. "Metlar" is used for broom-maker or broom-seller. Many plants used as brooms are called "metla" in Bulgarian; so are plants whose shape is similar to that of a broom (Asparagus spp., Poa spp., Lactuca spp., etc.) [16].
In central-southern Italy peculiar brooms used for sweeping farmyards are called "granate", see e.g. Salix alba [17]. In the National Museum of Arts and Folk Traditions a broom ("granata") from Apulia region, probably made of Thymus capitatus, is kept.
In some cases the vernacular name comes directly from Latin language, for example: "munda domos" in Sardinia (Stachys glutinosa), because in Latin language: mundare = to clean; domus = house.
In central Italy the little broom for cleaning ovens is called "mùnnulo": it is also made of some toxic plants, e.g. Helleborus foetidus and Sambucus ebulus [18].

Broom making craft
Making a broom is more than a plain activity, it is an art. Broom makers are familiar with broomcorn (morphological features, phenology, phytopathology, etc.). The observations gained on a plant are subsequently used in the production of brooms.
Sorghum bicolor is used for industrial manufacture only (Figs. 6, 7, 8). The part used is the panicle. In Bulgaria, it  Vitaceae - [22] is miscalled "metlov klas" (panicle ear) in practice. The same name is used in some official documents. The panicle branches are called "zhitzi" (wires). Some broommakers break the panicle stem (axis) under the first internodes, this causes faster blossoming and seed maturingwhich results in better quality panicles for brooms. The gathering of the panicles with mature seeds determines the typical colour of the glumes (in the first half of September). People know that reddish colour of panicles is caused by plant louses (Aphis sp.) or that it is the natural colour of some varieties, brownish is a result of fungi diseases, etc. [19].
The panicles without seeds are dried in open, sunny places (commonly in yards). After drying, panicles are grouped and bound together in small sheaves with hemp cord, fiber, mulberry branches or metal wire.
The remaining stems are used for firewood and for making temporary roofs. Broomcorn produces a large amount of plant material. Stems and folia are used as forage for sheep and cattle. The seeds are good food for cattle and birds [19][20][21].
The making of broom crafts is a men prerogative (rarely women). Also gypsies are known as good broom makers.  Michaltzi (Veliko Tarnovo district, Bulgaria). In the middle of last century people called the village "Metlenburg" (Broom-castle) as an analogue to some German towns, with typical Bulgarian sense of humour. The field work-free time is used -especially in winter -for broom making. The prepared brooms are used for barter; so are eggs in other villages. Six kinds of brooms from this region are known -common house broom, parson's broom, double broom, bettered "mihalska" broom, broom for dresses, attic broom. Models from foreign countries -Russia, Italy and Philadelphia -are imported for trade [19].
Well branched shrubby plants with strong, sinewy fibers and flexible twigs are selected for broom making (Ericaceae, Betulaceae, Fabaceae, Asteraceae, Rosaceae, Chenopodiaceae, Betulaceae, etc.) [19]. Making shrubby brooms is simple. The stems are bound together with sinewy wands, twisting plant stems or fiber around them while still fresh (Figs. 9, 10, 11). They are used after drying [19]. But in many cases a raw plant is used for shrubby brooms, it is available, and its technical quality is of no importance. These brooms are for private use, not for trade. This kind of brooms is typical of very poor and remote villages and districts.
Some kind of brooms for domestic and industrial use has different kinds of wooden handles (made of beech wood and linden, untreated beech wood or hornbeam wood).
In Sardinia, Italy, Arundo donax and Juniperus phoenicea stems are often used as handle respectively for Chamaerops humilis and Cistus monspeliensis brooms [22].
Some plants with strong fibres are locally used for binding: in Latium brooms made of Sorghum bicolor are bound with Rubus ulmifolius stem [23], while in Sicily Scabiosa atropurpurea stems are tied with Ampelodesmos mauritanicus leaves [24].
Brooms have a specific shape and working qualities. For these characteristics to be obtained different parts of the plants are used e.g.: stem (Genista radiata), branches (Salix In the past, plants of brooms have been growing at each house. Later, an one or several humans in the village or the region start to cultivate and make brooms, as a way to living. Small production workshops and manufactures are established gradually. Such more modern factories are present in nowadays. Their production comprises a wide range of straw brooms and brushes (for domestic and industrial use), different kinds of wooden broomsticks and details according to customers' wish. They export large quantities of the production (e.g. Greece) [19].

Broom uses
Local folk classifications (folk nomenclature) are result of daily experience of people using brooms. They called them soft and hard brooms, big and small brooms, depending on the type of plant they are made, their size and use. Names also are given according to their use (yard broom, home broom, threshing-floor broom, etc.) [16,[19][20][21]46].  [22] or of repellent and sticky materials: e.g. in Basilicata of Dittrichia viscosa to remove fleas [26]. In order to eliminate thorns from Opuntia ficusindica fruits were used Vitis vinifera shoots and Dittrichia viscosa leafy branches [22].
Ruscus aculeatus branches are commonly used for cleaning chimneys and walls from cobwebs [22].
Cleaning with brooms made from aromatic plants take the "burned food" odour away from ovens and stove burners, while oven and burners are still hot. Some "common broom" species, introduced as ornamental plants or cultivated for broom-manufacturing, became naturalized and invasive weeds because of their aggressive dispersal seed.
Cleaning with a broom of some plant species is part of many folklore traditions and religious rituals. Brooms of Centaurea spp. are used at home and are objects of beliefs; they have a special place in the home [20,21,27,28,46,49]. The plants are collect in special day of the summer named in Bulgarian traditions "Enyovden" (24 June). The made by them brooms, are guarded in the house until the next year. This broom is kept to the fireside or behind the door, to protect the family and the family from illnesses and evils. Through the spring the older broom sets on fire and throws on the waste. The fleas, the snakes and the lizards from the house are chased so away. A broom is not to be jumped, it is sin. If a girl is beaten with a broom, she will not marry. A broom if a little child is being left gone merely in a room is put next to it to defend it against an evil spirits. The broom is used for human treatment by fear. Through the spring customs a broom from the fire-side is stolen. The more the hostess is anger, that more rains there are. Later, the same broom draped in rags, and the stick is formed as the head with the eyes, eyebrows and a mouth. The name of this human's figure is "German". But this one "German" is used in rituals for drought, against rain [49].
A Basil (Ocimum basilicum) broom plays a special role in folklore tales and songs [21,28,49]. In Italy (and other several European countries) people believed that a broom made with Sorghum bicolor or with other plants, put behind the door of the house, could take away the witches (witches, counting the stem, made mistakes; they were occupied along the entire night counting the stems, therefore they do not could entry in the house [21,27,28].

Conclusion
As a result high species diversity of vascular plants in the research areas is established. Collected data, no matter what the level of ethnobotanical knowledge in different parts of the study area, shows how ecological, geographical features and different cultures are related with the variety of plants traditionally used as brooms as well as details for their uses.
What are the historic roots of the use of plants for brooms and of broom making craft? This is one of the questions that cannot have only one correct answer. Studies, as presented here throw light on this field. Nowadays, the use of home-made brooms and broom making craft are disappearing. The brooms have lost their necessity in our daily lives. The principal reasons are realities of the modern life: loss of the specific tasks and places which they were used, industrialization of traditional farming, the modern tools for cleaning, partial adoption of modern material, the reduced number of craftsman and etc. The skills transmission through generations is in danger and much more threatened with extinction.
The data about the variety of plants traditionally used to make brooms and the ways in which they are used according to the specific characteristics of the areas are important for ethnobotanical knowledge.
They contribute to preserving the world's human traditional experience as well as national identity.