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Stenomeris.] CXLV. DlOSCOREACElE. 3 1 3<br />
septicidal. Seed compressed winged above. Species 3, Malay<br />
isles.<br />
(I) S. borneensis Ohv. Ie. Pl. 2328.<br />
Stem slender. Leaves ovate-lanceolate cordate acuminate,<br />
5 to 7 in. long, 1'5 to 3 in. wide; nerves 5 to 10. Flowers '25 in.<br />
long, lobes linear. Fruit 10 in. long, '75 to I in. through. Hab.<br />
Selangor, Batu Caves, climbing on bushes, very rare (Ridley).<br />
Distrib. Borneo.<br />
3. DIOSCOREA, Linn.<br />
Slender climbers with large tubers. Stems branched smooth,<br />
winged, or thorny. Leaves opposite or alternate entire or digitately<br />
3- to 5-foliate with 3 to 9 veins on each leaflet. Flowers<br />
green, very small in spikes or racemes pendulous unisexual. Male<br />
flower, perianth-lobes short rotate. Stamens 6 or 3 perfect only,<br />
at base of segments. Female flower, perianth as in male. Staminodes<br />
3 to 6. Style short or 0; stigmas 3 linear, entire or bifid;<br />
ovary 3-angled, 3-celled; ovules 2 in a cell. Capsule 3-winged,<br />
loculicidal. Seeds flat winged. Species 150, all warm parts of<br />
the world.<br />
(Synopsis of Dioseoreas of Old World by Prain and Burkill,<br />
Journ. As. Soc. Beng. x. 6.)<br />
Leaves 3- to s-folIate.<br />
Leaflets 3-folIate.<br />
3 to 7 in long, stamens 6<br />
2 to 4 m. long; stamens 3<br />
Leaflets<br />
Glabrous above.<br />
Hairy all over. . . .<br />
Lea ves simple; perian th not tubular; stem not<br />
wmged.<br />
Capsule longer thl!n broad; leaves deeply<br />
cordate.<br />
Male flowers in numerous long spikes, lobes<br />
(I) D. triphylla<br />
(2) D. tamarisciflora<br />
(3) D. Scortechinii<br />
(4) D. pentaphylla<br />
free, plant bulbIferous.. (5) D. bulbifera<br />
Capsule unknown; leaves deeply cordate.<br />
Male flowers saucer-shaped m solitary racemes (6) D. aculeata<br />
Capsule orbicular or transversely oblong broader<br />
than long.<br />
Leaves ovate pubescent or puberulous beneath./'<br />
Pamcles tomentose; leaves cordate . (7) D. polyclades<br />
Panicles glabrous; leaves not cordate (8) D. pyrifolia<br />
Leaves glabrous, thm; panicles glabrous.<br />
Leaves ovate-Ianceolate cordate (9) D. myriantha<br />
Leaves ovate entire (10) D. orbiculata<br />
Leaves ellIptic-oblong . (II) D. Zollingeriana<br />
- Leaves oblong-ovate or oblong.<br />
Buds gibbous at base; spikes very short (12) D. gibbiflora<br />
Buds not gibbous; spikes 's m. long (13) D. glabra<br />
Leaves glabrous, cona,ceous.<br />
Leaves linear-oblong, s-nerved<br />
Leaves linear or ellIptiC, 3-nerved<br />
(14) D. Porteri<br />
(15) D, laurifolia