XCII. ASCLEPIADACEjE. 
37° 
Stamens without alternating glands between the 
filaments. 
Corolla-lobes round. 
Corolla large; follicles short, broad, ribbed. 
Corolla small; follicles cylindric, narrow 
Stamens with glands between filaments. 
Corolla-lobes linear-lanceolate 
Corolla-lobes short, oblong 
5. Finlaysonia 
6. Gymnanthera 
7. Atherandra 
8. Streptocaulon 
ii. SecamonejE. Pollen combined into waxy masses (sometimes into one) 
sessile on pollen-carriers, minute quadrate, pale. Filaments of stamens 
connate in a tube and adnate to dilate parts of the style; appendages more 
or less fimbriate. 
Corolla-lobes imbricate, glabrous or puberulous. 
Tube not lined with a toothed membrane; 
corona thin. 
Corolla small; style-tip short blunt; pollinia 
in fours ...... 
Corolla rather large ; style-tip long; pollinia 
in pairs ...... 
Tube lined with membrane, toothed; corona 
thick ....... 
Corolla-lobes valvate, villous inside . 
9. Secamone 
10. Toxocarpus 
11. Goniostemma 
12. Genian thus 
iii. Cynanche^e. Pollen masses waxy, opaque, pendulous in pairs, pollen- 
carriers dark red. 
Corona of 5 processes adnate to column. 
Erect plants. 
Large bushes; flowers large pale lilac 
Herb; little-branched; corolla scarlet 
Climbers; flowers large, fleshy; corona pro¬ 
cesses adnate to column. 
Flowers small; corona processes attached 
to base of column .... 
Corona annular, adnate to surrounding column 
base; flowers small .... 
13. Calotropis 
14. Asclepias 
15. Raphistemma 
16. ISCHNOSTEMMA 
17. Cynanchum 
iv. Marsdenieje. Pollen masses erect or horizontal, waxy, pollen-carriers 
dark red attached to pollen by caudicles; stamens connate in a tube ; anthers 
erect or incumbent on style-tip with flat or inflate membranous appendages. 
Corolla-lobes imbricate; scandent. 
No corona; fruit fleshy; seeds with no plume, 
large ....... 
Corona present, corolline. 
Erect herb with narrow leaves; petals long. 
Climbers; petals short .... 
Corona staminal or absent. Climbers; 
corolla urceolate or campanulate. 
Corona processes fleshy, round . 
Corona processes fleshy, spreading in a star; 
flowers large, few; corolla rotate 
Corona processes subulate often bilobed; 
flowers small in a panicle, raceme or 
corymb ...... 
Corona processes beaked; corolla salver¬ 
shaped ; flowers medium 
Corona processes none or flat; flowers large 
or small ...... 
Corona processes small; corolla small, rotate 
18. Sarcolobus 
19. Pen TASACME 
20. Gymnema 
21. Gongronema 
22. Dregea 
23. Marsdenia 
24. Pergularia 
25. Stephanotis 
26. Tylophora 
