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Table 2 Lists of variety and sub-variety names and the underlying basis of the classification

From: Indigenous biosystematics of yams (Dioscorea spp.) in Southwest Ethiopia: folk taxonomy, ethnolinguistic analysis, and folk descriptors

List of local names References Contexts Structures Meaning of names or the underlying basis of classification /identification
I. D. cayenensis complex
 1 Karka-kachi Present study, [12, 15] W PU Karka” means forest in Sheko dialect, and its name is said to be derived from the wild location. Whole tuber of Karka-Kachi is dark purple and bitter in taste. If tuber has bright orange color at stem junction, it is red (submseb); if it has dark grayish purple pigment at proximal end, it is black (tsaa’nseb), and if it is unpigmented, it is white (ga’nseb).
Karka-kachi submseb Present study, [12]   PB
Karka-kachi tsaa’nseb    
Karka-kachi ga’nseb    
 2 Shah-boy, Karckabat Present study, [14] W PU Shah” means forest in Bench dialect; its name thus refers to the area name in a wild place. Its tuber has pale purple color with few pale orange colors at proximal end.
 3 Upfaa [12] W SU Name translation is not given. Yet, its tuber has patches of purple pigment at proximal end and white elsewhere
 4 Karka-Kachi Present study, [12] WT PU Tuber of this variety is generally pale purple. If it has dark purple pigment at stem junction, it is black (tsaa’nseb); if it is unpigmented, it is white (ga’nseb); if it has patches of orange color at proximal end and white elsewhere, it is spotted (guignseb).
Karka-kachi tsaa’nseb    PB
Karka-Kachi ga’nseb    
Karka-Kachi guignseb    
 5 Yasind Present study, [14] WT SU Tubers of Yasind varieties are very similar in size and shape. But, if its tuber has purple pigment at proximal end, it is black (Tsid); if it has patches of purple and orange color at proximal end and white elsewhere, it is white (Dal)
Tsid yasind    SB
Dal yasind    
 6 Kaibab/Baidai-kachi Present study, [12] RT PU Kaibab is the area name in northeast Sheko. Baidai is said to come from a Kaibab area. Whole tuber is purple with white, but if it is grayish purple at proximal end, it is black (tsaa’nseb); if it is unpigmented, it is white (ga’nseb).
Kaibab-kachi tsaa’nseb    PB
Kaibab-kachi ga’nseb    
 7 Chabsha Present study, [14, 15] RT SU Tubers of Chabsha varieties are similar in size and shape, but Tsid Chabsha has pale purple proximal end and pale gray stems, while Dal Chabsha does not.
Tsid Chabsha Present study, [14]   SB
Dal Chabsha    
 8 Tolubab Present study, [14] RT SU Name means “tubers with a bitter taste”. Tuber has patches of pale purple color at proximal end and white elsewhere
 9 Torbay Present study, [12, 15] RT SU Name means “tubers with a bad taste”. Tuber has patches of pale orange color at proximal end and white elsewhere
 10 Beri Present study, [12, 14] LT SU Name means “lowland desert” wherein it is said to come from lowland desert areas. The tuber and basal stem edges of this variety have pale purple pigment.
 11 Don Present study, [12] LT SU Don means “wide and short”; it is named so because its tuber does not elongate like other kinds. Tubers of Don varieties are similar in size and shape, but Don babu (fat man) has more strongly pigmented tubers and stems. Few farmers also explained that Don bayye (fat woman) show a tendency to branching
Don bayye    SB
Don babu    
 12 Dizzu-Kachi Present study, [12] LT PU Dizzu is the Sheko term for their Bench neighbors to the east and is said to come from Bench areas. If the tuber and basal stems of this variety has dark purple color, it is black (tsaa’nseb), whereas ga’nseb does not.
Dizzu-Kachi tsaa’nseb    PB
Dizzu-Kachi ga’nseb    
 13 Kachi-kundia [12] LT SB Kundi means “feather or filament at rear end of a chicken” Tubers has a considerable numbers of spiny roots on its crown
 14 Lekut Present study LT SU Tuber is white with purple at distal end and white elsewhere
 15 Logit Present study LT SU Tuber is purple with white at middle and white elsewhere
 16 Shure Present study LT SU Shure means “worm”. It is so named because tubers of this yam have a worm-like shape.
 17 Kachi-Kuch’aia [12] LT SB Tubers of easy cooking and tasty
 18 Konkay Present study LT SU Name means “crispy while eating”. The tuber and basal stems of this variety has a pronounced dark purple color.
 19 Banda boy Present study, [14] LT SB Name means “of multicolored”. White purple tuber and cylindrical shape. If it is white at distal end and white purple elsewhere, it is Tsam; if it is pale purple at proximal end and white elsewhere, it is Tsenah
Tsam banda boy    PB
Tsenah banda boy    
 20 Shapinsin Present study, [14] LT SU Tuber is flat, white at distal end, and purple white elsewhere
 21 Kuchuu’bai Present study, [14] LT SU White tuber and irregular shape.
 22 Zansul Present study, [14] LT SU Whole tuber is white and flattened at distal end
 23 Tsid boy Present study, [14, 15] LT SB Whole tuber is dark purple
 24 Dal boy Present study, [14] LT SB Whole tuber is white
 25 Don boya [14] LT SB Whole tuber is pale purple
 26 Shamut Present study, [14] LT SU Irregular tuber shape.
 27 Kappar Present study, [14] LT SU White purple tuber, very firm flesh, oval tuber shape.
 28 Kalua [14] LT SU White purple tuber and cylindrical shape
 29 Bud boya [14] LT SB Whole tuber is white with purple and oval shape.
 30 Tush boya [14] LT SB White purple tuber, very firm flesh, oval shape
 31 Bunkria [14] LT SU Tuber shape is in between cylindrical and oval
II Dioscorea alata
 1 Ongubay, Baday Present study, [12, 14, 15] LT SU Ongubay means “foolish” while Bada means “distinct”. It is so named because its foliage differs from that of other kinds of domestic Kachi. Whole tuber is white, but if its tuber and stem edges has dark orange color, it is red (submseb)
Submseb Ongubay Present study   SB
 2 Earkubai Present study, [12, 14, 15] LT SU Name means “of sharp taste”. Tuber and stem edges of this variety have purple pigment and irregular in shape.
 3 Zenkuru Present study, [12, 15] LT SU Name means “seeker of others”. It is so named from a lazy man who does not work but seeks to eat food that is prepared by another person
 4 Dak’oia [12] LT SU Whole tuber is white and irregular tuber shape.
III Dioscorea bulbifera
 1 Karka-ama or Balakay-oake Present study, [12, 14] W PU Classification of a bulbifera plant as wild vs. cultivated relied on the area of growth. Ama/oake grows in garden while Karka ama/Balakay oake grows in wild area. If the bulbils of cultivated bulbifera have traces of dark color near edges, it is black (tsaa’nseb/Tiab); if not, it is white (ga’nseb/don)
 2 Ama or Oake Present study, [12, 14] LT SU
Ama tsaa’nseb/Tiab oake    SB
Ama ga’nseb/Don oake    
  1. Contexts: W wild, WT wild transplant, RT varieties of cultivated yams that are known to be recently transplanted to open field, LT varieties of cultivated yams that are regarded as longtime cultivars
  2. Structures: SU simple unitary, SB simple binary, PU productive unitary, PB productive binary
  3. aIndicates the list of names of varieties, where their characteristics are given based upon only on the folk-provided descriptors the fact that they were not encountered during the survey