CXLV. DIOSCOREACE^E. 
Stenomeris.\ 
313 
septicidal. Seed compressed winged above. Species 3, Malay 
isles. 
(1) S. borneensis Oliv. Ic. Pl. 2328. 
Stem slender. Leaves ovate-lanceolate cordate acuminate, 
5 to 7 in. long, 1*5 to 3 in. wide; nerves 5 to 10. Flowers -25 in. 
long, lobes linear. Fruit 10 in. long, 75 to 1 in. through. Hab. 
Selangor, Batu Caves, climbing on bushes, very rare (Ridley). 
Distrib. Borneo. 
3. DIOSCOREA, Linn. 
Slender climbers with large tubers. Stems branched smooth, 
winged, or thorny. Leaves opposite or alternate entire or digi- 
tately 3- to 5-foliate with 3 to 9 veins on each leaflet. Flowers 
green, very small in spikes or racemes pendulous unisexual. Male 
flower, perianth-lobes short rotate. Stamens 6 or 3 perfect only, 
at base of segments. Female flower, perianth as in male. Stami- 
nodes 3 to 6. Style short or o; stigmas 3 linear, entire or bifid; 
ovary 3-angled, 3-celled; ovules 2 in a cell. Capsule 3-winged, 
loculicidal. Seeds flat winged. Species 150, all warm parts of 
the world. 
(Synopsis of Dioscoreas of Old World by Prain and Burkill, 
Journ. /Is. Soc, Beng. x. 6.) 
Leaves 3- to 5-foliate. 
Leaflets 3-foliate. 
3 to 7 in. long; stamens 6 . . . . (i) D. triphylla 
2 to 4 in. long; stamens 3 . . . . (2) D, tamarisciflora 
Leaflets. 
Glabrous above . . . . . . (3) D. Scortechinii 
Hairy all over ...... (4) D. pentaphylla 
Leaves simple; perianth not tubular; stem not 
winged. 
Capsule longer than broad; leaves deeply 
cordate. 
Male flowers in numerous long spikes, lobes 
free; plant bulbiferous . . . (5) D. bulbifera 
Capsule unknown; leaves deeply cordate. 
Male flowers saucer-shaped in solitary racemes (6) D, aculeata 
Capsule orbicular or transversely oblong broader 
than long. 
Leaves ovate pubescent or puberulous beneath. 
Panicles tomentose; leaves cordate . . (7) D. polyclades 
Panicles glabrous; leaves not cordate . (8) D. pyrifolia 
Leaves glabrous, thin; panicles glabrous. 
Leaves ovate-ianceolate cordate . . (9) D. myriantha 
Leaves ovate entire . . . . (10) D. orbiculata 
Leaves elliptic-oblong . . . (n) D. Zollingeriana 
Leaves oblong-ovate or oblong. 
Buds gibbous at base; spikes very short (12) D. gibbiflora 
Buds not gibbous; spikes-5 in. long . (13) D. glabra 
Leaves glabrous, coriaceous. 
Leaves linear-oblong, 5-nerved . . (14) D. Porteri 
Leaves linear or elliptic, 3-nerved . . (15) D. lauriiolia 
