16*. 128. ASCLEPlADACEAg. 



Stattiinal Column cylindrical or broadly conical: IS. 



15. Style produced' much beyond the erect anther appendages. 



9 CORDYLOGYNE. 

 Style truncate or depressed at the apex. 16. 



16. Corona lobes erect, thin (very rarely somewhat thick) usually 



with 2 keels. 11 SCHIZOGLOSSUM. 



Corona lobes very spreading or spreading at the base with 

 erect or incurved tips, rarely wholly erect and then with 

 reflexed sides and a single keel down the face. Usually 

 with 2 contiguous fleshy keels at the base. 



14 PACHYCARPUS. 



17. Corona double (in 2 distinct series). 18. 

 Corona simple (no outer corona). 19. 



18. Stem leafless fleshy. 17 SARCOSTEMMA. 

 Stem not fleshy. Leaves large, cordate. 



18 PERGULARIA. 



19. Corona lobes short, usually tubercle-like. 19 TYLOPHORA. 

 ' Corona lobes or corona not tubercle-like. 20. 



20. Corona of S free lobes, with infolded margins with a horn 



directed over or towards the anthers. 



15 PENTARRHINUM. 



Corona annular or tubular, truncate or toothed at top, or 



divided nearly to base into 5 flattened entire or toothed 



lobes. 16 CYNANCHUM. 



21. Anthers with a distinct, membranous appendage at the apex. 



Corolla usually with contorted aestivation. 22. 



Anthers without or with a very small appendage or small 



point at the apex, corolla nearly always with valvate 



aestivation. 25. 



22. Corona of 5 scales arising from the corolla below its sinuses. 



Twining hairy shrubs. 25 GYMNEMA. 



Corona arising from the stamens or in the angle between the 



staminal column and the corolla. 23. 



23. Corona tubular lobed or toothed at the top with extra teeth 



and 5 pairs of wing-like keels within the tube. Erect 



or twining. 24 FOCKEA. 



Corona lobes free Or united at the base arising from staminal 



column. 24. 



24. ' Corona lobes with a narrow appendage on the inner face. 



23 TELOSMA. 

 Corona lobes witho'ut an appendage on the inner face. 



22 MARSDENIA. 



25. Stem cactus-like,- angled. Leaves small or wanting. . Dwarf 



succulents. 26. 



Stem herbaceous, or woody, or, if fleshy, then climbing. 28. 



26. Corolla with accessory teeth between the lobes. 



^- "■■"'" 32 HUERNIA. 



