Dioscorea.] 
CLXV. DIOSCOREACE^E. 
317 
are variable in shape and size. The commonest form is the variety 
ferruginea. Distrib. Cambodia, Malay Archipelago. Native name : 
Akar Guluno. 
(9) D. myriantha Kunth. Enum. PI. v. 382. 
Slender glabrous unarmed climber. Leaves alternate, thin 
ovate-lanceolate acuminate, base cordate, lobes rounded, 5-nerved, 
3 to 3-5 in. long, 1-5 in. wide; petioles slender, 1-5 in. long. Male 
panicles slender solitary axillary, 2 to 6 in. long. Spikes numerous 
slender, *5 to 1 in. long, glabrous. Flowers very small; bracts 2, 
one ovate-acuminate, inner one smaller. Perianth urceolate, 
•05 in. long; sepals ovate rounded. Petals obovate smaller. 
Stamens 6, minute. Female spikes 4 in. long, with distant flowers. 
Fruit tranversely oblong, wings rounded, 1 in. long, 1*5 in. wide. 
Hab. Lankawi, Kwala Kwah (Hanifl and Nur). Distrib. Philip¬ 
pines. 
(10) D. orbiculata Hook. fit. F.B.I. vi. 292; Ridl. Mat. ii. 
82. D. sativa Wall. Cat. 5108c (not of Thunberg). 
Stem moderately stout. Leaves thin, glabrous above, reticulate 
with stellate hairs on the back, ovate cuspidate, base broad entire, 
2 to 5 in. long, 1*5 to 2 in. wide; petioles 2 to 3 in. long, pubescent; 
young leaves ovate cordate, 5 in. long, 4 in. wide. Male panicles 
1 ft. long, pubescent. Spikes in distant whorls of 4 or 5, 3 in. long 
or less. Flowers yellow, small; rachis pubescent. Sepals ovate. 
Petals oblong. Capsules obovate. Hab. Open country, thickets. 
Malacca (Cuming); Sungei Hudang (Goodenough); Batang Malaka 
(Burkill). Negri Sembilan, Gemas (Burkill). Perak, Thaiping 
and Goping (Kunstler); Tapah (Wray), Sungei Siput (Burkill). 
Penang Hill (Curtis, Phillips). Kedah Peak (Hanifl). Distrib. 
Sumatra, Borneo. Native name- : Akar Kakop. 
(11) D. Zollingeriana Kunth. Enum. PI. v. 384; Ridl. Mat. ii. 
82. D. deflexa Hook. fd. F.B.I. vi. 293; Ridl. Mat. ii. 83. D. 
tenuifolia Ridl. Journ. Roy. .ds. Soc. S. Br. 41. p. 34. 
A slender climber, base slightly spiny. Leaves opposite or 
alternate, thin membranous to thinly coriaceous, glabrous elliptic- 
oblong, cuspidate, base entire rounded or slightly narrowed; young 
leaves cordate, 2 to 4 in. long, 175 to 2 in. wide; petioles 1 in. long. 
Male flowers in panicles 1 ft. long. Spikes 3 to 5 in a whorl, 1 to 3 
in. long, slender, deflexed; rachis and flowers pubescent. Sepals 
ovate. Petals narrower oblong. Stamens 6, short. Female 
panicle much branched. Spikes 18* in. long. Flowers distant. 
Capsule rounded transversely oblong, top retuse, 1 in. long, 2 in. 
wide, lobes round. Hab. Woods and forests. Singapore, Bukit 
Timah; Garden Jungle (Ridley). Malacca (Maingay). Selangor, 
Batu Caves (Burkill). Perak, Larut Hills (Kunstler). Distrib. 
Nicobars, Sumatra, Java. 
(12) D. gibbiflora Hook fil. F.B.I. vi. 294; Ridl. Mat. ii. 82. 
Stem slender. Leaves opposite, thin, glabrous oblong-lanceo- 
