Dioscorea.} DIOSCOREACE, 1065 
shen sparsely pubescent or glabrous beneath, usually 5, often 3, 
rely 7 pentaphylla. 
faites softly grey-tomentose beneath, 3, rarely 4, in lower leaves ; ; 
upper leaves irregularly 2-foliolate, or 2-3-lobed, or entir 
tomentosa, 
tLeaves all simple :—[p. 1064] 
Capsules longer than broad; seeds wes at base only; sepals 
me) 
Stem with axillary bulbils smooth............... bulbifera var. sativa. 
Stem terete, or faintly angled wits not sGiinre 
. lbifera var. pulchella. 
Stem with 10-15 small, crispate, longa wings 
bulbi Ed var. crispata. 
Capsules broader than long ; seeds winged all ro 
Leaves glabrous, hastate- or subelo-ordate, without stipular 
thorns toidea var. sikkimensis. 
Leaves pubescent reniform- or i ermtdasiats with sha 
stipular thorns 
: Tubers seatietonss cpa eae spiny roots 0 .......+++. asciculata. 
i Tubers few, unequal, mixed with many fibrous roots of whic 
the u uppermost are spinous ..................fasciculata var. spinosa. 
*Stem twining to the right; leaves all simple; capsule broader than 
long; seeds winged all round :—[p. 1064 
t Leaves softly tomentose, with cartilaginous margins ............ anguina. 
tems terete or compressed, pores or faintly angled :— 
Rachis of flower-spikes strai 
Leaves green beneath ; pis Sua large, globose ......... aculeata, 
Leaves glaucescent beneath ; pistillode minute :— 
Perianth-segments firm, thick; upper leaves often with bases 
shallow-cordate or subtruncate .........s:sss.sseeeee ice POPE 
Perianth-segments herbaceous ; pe _ ves deep-co 
mmularia var, bapa 
Rachis of flower-spikes zigzag iltoni. 
Stems 4. -gonous, winged or strongly angled 
Tubers white or yellowish-white vient and within :— 
Tubers oblong or tapering alata. 
Tubers globose alata var. globosa. 
Tubers we: outside, oblong :— 
Skin purple but flesh white alata var. rubella. 
Skin and flesh both purple . alata var. purpurea. 
