44 



ASCLEPIABACE^. 



[ Heaiidesmt/3. 



Corona staminal, double ; follicles 

 covered with soft spines . . 9. 

 Pollen-roasse3 erect. 



Corona adnate to the corolla- tube . 10. 



Corona staminal. 

 Corona-lobes adnate to the base of 

 the anthers or none . . ■ 



Corona-lobes adnate to the staminal 

 column, without a subulate process 

 on the inner face of the free apical 

 portion . . . . 

 Corona-lobes adnate to the staminal 

 column, each vith a subulate pro- 

 cess on the inner face of the free 

 apical portion ..... 13. 

 Corona of 5 email tubercles adnate to 

 the staminal column . . .14. 



Anthers incumbent on the stigma, without 

 a membranous appendage. Corolla -lobes 

 valrate, pollen-masses erect. 

 Corolla-tube short, limb rotate or saucer- 

 shaped. 



Corona of 5 small erect hair-tipped 

 scales inserted in the sin uses of the 

 corolla-lobes, sometimes with an 

 inconspicuous fleshy ring at the base 

 of the staminal column . . .15. 



Corona double, entirely staminal. 

 Flowers 1-4 at the nodes, or many 

 in a terminal umbel . • • .16. 



Corolla-tube more or less elongate and 

 often inflated at the base. 

 Corona of 5 saiall erect scales inserted 

 in the sinuses of the corolla-lobes, 

 sometimes with an inconspicuous 

 fleshy ring at the base of the staminal 

 column . ... 17. 



Corona double, staminal, attached to 



the column ..... 18. 



D^MIA. 



Gyhnema. 



11. gongronema. 



12. Marsdenia. 



Pergularia. 

 Tylophora. 



Leptadenia. 

 Brachystelma. 



Orthanthera. 

 Ceropegia. 



1. HEMIDESMUS, K. Br. ; Fl. Brit. Ind. iv, 4. 



A twining shrub. Leaves opposite, hoary or pubescent beneath 

 Flowers small, in opposite crowded subsessile axillary cymes 

 greenish-purple. Calyx 5-partite ; lobes glandular within at the 

 base, acuminate. Corolla rotate : lobes thick, valvate. Coronal 

 scales 5, on the throat of the corolla aid alternate with its lobes, 

 short, fleshy. Stamens attached to the base of the corolla-tube, 

 filaments distinct or slightly connate at the base, anthers with 



