6 Journal of the Asiatic Society of Bengal. [January, 1914. 



Section 2. Stenophoka. Rhizome horizontal, inedible. 

 Stem twining to the left. Leaves simple, but often lobed. 

 Male flowers in small irregular cymes, or in groups of 2—5, 

 or sometimes solitary, along racemose axes: perianth cup- or 

 saucer-shaped, the stamens inserted on the margin of its tube : 

 filaments simple. Seeds winged all round, often unequally so, 

 in abbreviated reflexed capsules. 



Male flowers not in sessile clusters. 



Male flowers not in a thyrsoid panicle. 

 Leaves not lobed. 



Flower3 in small inflorescences and 1-2 together. 



Leaves exactly cordate .. ..2. flabellifolia. 



Leaves lanceolate-ovate-sagittate . . 3. daunaea. 



Leaves ovate-deltoid . . 4. cambodiana. 



(Probably allied to the above, but the male 



flowers unknown) .. ..5. Ridleyi. 



Flowers in robust inflorescences and as many 



as six together . . . . (>. birmanica. 



Leaves lobed. 



Leaves trifle I 



8. membranacea 



Leaves with many small lobes . . . . 0. nipponica. 



Male flowers in thyrsoid panicles. 



Panicles and pedicels relatively short. 

 Leaves lobed deeply. 



Leave3 with sharp lobes, drying black . . 10. septemloba. 

 Leaves with blunt lobes, not drying black 11. quinqueloba. 

 Leaves with very slight lobes, narrowed 



abruptly from the auricles, bright green . . 12. Tokoro. 

 Panicles elongated and pedicels relatively long. 13. tenuipes. 



Leaves usually 7-nerved. 



Leaves 9-nerved, dull, not narrowed abruptly 



above the auricles . . . . . . 14. enneaneura. 



Male flowers in very contracted scorpioid cymes, 



very small 

 Male flowers in sessile clusters (sub-sessile in D. sik- 



kimensis). 

 Stamens 0. 



15. tentaculigera 



Plants not drying black. 



Lower leaves 4 together . . . . 16. villosa. 



Lower loaves not 4 together. 

 Leaves smooth beneath. 



Male flowers strictly sessile . . 17 Prazeri. 



(Certainly allied to the above, differing 

 in the shape of the capsules ; but 

 male flowers unknown) .. IS. ClarheL 



Male flowers with very short pedicels. . 10. sikkimensis 

 Leaves with papillae beneath. 



Tubular part of male flower as wide as 



long ; sepals obtuse . . . . 20. deltoidea. 



Tubular part of male flower narrow at 



the mouth ; sepals acute .. 21. caucasira 



Plant drying blackish; leaves from a cordate 



base triangular- acuminate . . . . 22. panthaica. 



Plant drying black; leaves abruptly and 

 shortly acuminate. 

 Leaves not peltate. . .. ..23. oenea. 



Leaves slightly peltate . . . . 24. zingiber -ensis. 



Stamens 3 only fertile. 



Plant drying black . . . . . . 25. Collettii. 



