44 ASCLEPIADACE^. [HEMIDESMUS. 



Corona staminal, double ; follicles 



covered with soft spines . . 9. DMMIA. 

 Pollen-masses erect. 



Corona adnate to the corolla- tube .10. GYMNEMA. 



Corona staminal. 

 Corona-lobes adnate to the base of 



the anthers or none . . .11. GONGRONEMA. 



Corona-lobes adnate to the staminal 

 column, without a subulate process 

 on the inner face of the free apical 



portion 12. MARSDENIA. 



Corona-lobes adnate to the staminal 

 column, each vith a subulate pro- 

 cess on the inner face of the free 



apical portion 13. PERGTJLARIA. 



Corona of 5 small tubercles aduate to 



the staminal column . . .14. TYLOPHORA. 

 Anthers incumbent on the stigma, without 

 a membranous appendage. Corolla-lobes 

 valvate, 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. LEPTADENIA. 

 Corona double, entirely staminal. 

 Flowers 1-4 at the nodes, or many 

 in a terminal umbel . . . .16. BRACHYSTELMA. 



Corolla-tube more or less elongate and 

 often inflated at the base. 

 Corona of 5 small erect scales inserted 

 in the sinuses of the corolla-lobes, 

 sometimes with an inconspicuous 

 fleshy ring at the base of the staminal 

 column . . . . . .17. ORTHANTHERA. 



Corona double, staminal, attached to 



the column ... . . .18. 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 



