Dioscorea.] CLIV. DIOSCOREACEX. (J.D. Hooker.) 395 
22. D. Wallichii, Hook. f.; quite glabrous, leaves opposite long- 
petioled ovate or orbicular-cordate 7-nerved, male spikes 1 in. in short axil- 
ary and terminal spreading panicles, flowers globosely 3-lobed, stamens 
short, pistillode large globose. D. sativa, Herb. Madr. in Wall. Cat. 5708; 
A, B, F, D. ?D. nummularia, Willd. en Roch, Fl. Ind. iii. 803. 
SILHET, CACHAR, MUNNEPORE and BURMA, common. CHOTA NAGPOBE, Clarke. 
TRAVANCORE, Herb. Madr. (Cult. ?). . 
Branches stout, terete. Leaves 3-6 in., as broad, always broadly cordate with 
rounded sides and a broad sinus, very finely reticulate benéath; petiole 3-5 in. 
Flowers about xz In. diam. ; sepals and petals suborbicular ; stamens inserted under 
the pistillode ; anthers small. Capsule 1} in, diam., emarginate at the tip. Seeds 
orbicular, broadly winged.— The very broad rounded long-petioled glabrous leaves 
and large pistillode are good characters. 
, Sect. V. Sepals orbicular. Stamen 6 antheriferous; anther cells com- 
bined. Capsule longer than broad. Seeds laterall y winged. 
_ 23. D. Hamiltoni, Hook. f.; quite glabrous, stem angled or slightly 
nged, leaves cordately or subhastately ovate or lanceolate 7-9-nerved, 
male spikes i in. rachis very sleuder zigzag, stamens very short, pistillode 
obscure. D. sativa, Wall. Caf. 5108. D. aculeata, Wight Ic. t. 2060. D. 
alata, Griseb, F? Brit. W. Ind. 587. D. incrassata and ovata, Herb. Ham. 
" SIKKIM, Assam, CACHAR, BEHAR, CHOTA NaGPORE, MALABAR and BURMA ; in 
all ? cultivated. DisTRIB. St. Domingo (cult.). D 
Branches slender. Leaves opposite and alternate, undistinguishabie from those 
e D. glabra ; petiole 1-23 in. Male spikes whorled on the branches of very slender 
c ongate axillary and termina] panicles ; flowers globose, ;'; in. diam. ; sepals broad ; 
petals cuneate-obovate. Capsule 1-1} in. long, membranous, sides parallel, tip acute, 
Dase cordate.—The slender zigzag rachis of the male spikes, well represented by Wight, 
: quite peculiar to this species, I regret having to reject both Hamilton S names 
‘om being unable to comprehend their significance in respect of this plant. 
C Sect. VI, Sepals narrow, subvalvate, linear or linear-lanceolate. 
apsule oblong. Seeds, winged laterally. 
24. D. sativa, Linn. Sp. Pl. 1033 (excl. sym. Rheede); Hort. Clif. 
i 28 ; quite glabrous, stem terete bulbiferous, leaves broadly ovate-cordate 
p, ninate cuspidate or caudate 7-9-costate,male spikes slender panicled. 
Foie FL Honk. 368; Fl. Austral. vi. 460. D. bulbifera, Br. Prodr. 294. 
D ight Te. t. 878, D. Cliffortiana, Lam. Encycl. iii. 232 (not of Hl. t. 818). 
` versicola, Herd, Ham. ; Wall. Cat.5106. D. pulchella and heterophyla, 
ozb. Fl. Ind, iii, 801-804. D. decemangularis and D. Tunga, Herb. Ham. 
Helmia bulbifera, Kunth Enum. v. 435. 
Tubers large, vari i R le. Leaves opposite 
a Variable in form. Stem slender, green or purp 
alternate, very variable in size, attaining 14 in. in length and breadth, mem- 
d s) dark green, usually very deeply cordate but sometimes with only a shallow 
Sinus; petiole 2-6 in. Male spikes almost capillary, 1-4 in. ; flowers crowded 
10» Very variable in size, green or purplish; sepals 4.4 in. long, fies y ; 
T narrower ; filaments much shorter than the perianth ; anthers ‘ie as "4 
the m us, em. spikes 4—10 in. long, pendulous ; flowers $i in. long ; Sech s in 
I follow B Capsule $-1 by j-i in., membranous. Seeds with a broad fu ch " 
" Hort entham in regarding this as Linnaus’s sativa; an inspection of the p thi 
T Cliffortianus,” which is Linnzaus's authcrity for the species, confirming this 
