xcv. asclepiadejE. (J. D. Hooker.) 3 



**** Corona single, staminalj cupular or annular. Corolla rotate. 



Corona of a lO-lobed ring, and 5 horny processes behind the 



anthers 25. Holostemma. 



Corona annular. Leafy erect or t-wiuing herbs or shrubs . 26. Cynanohdm. 

 Corona annular. Leafless straggling shrubs 27. Saeoostemma. 



Teibe rV. marsdenieee. Anthers -with a membranous inflexed tip 

 (absent in Physostelma and rarely in Hoya) ; pollen-masses solitary in each cell 

 (10 in aU), sessile, or pedicelled in pairs on the corpuscle, erect (rarely horizon- 

 tal or pendulous in Tylophwa). 



* Corolla-lobes overlapping. Corona 0, or corolline. 



Stem twining. Corolla-lobes short. Corona 28, Sabcolobus. 



Stem pendulous. Corolla-lobes long. Stigma included . . 29. Pentasacme. 

 Stem twining. Corolla lobes short. Corona on the corolla- 

 tube 30. GrTMNEMA. 



** Corolla-lobes overlapping. Coronal processes on the staminal column, 

 rarely 0. 



f Corolla wceolate. companuldte or salver-shaped. 



Corolla urceolate. Coronal processes minute or 0. Stigma 



included 31. Gonobonema. 



Corolla urceolate or salver-shaped. Coronal scales on the 



back of the anthers, simple 32. Mabsdenia. 



Corolla rotate or salver-shaped. Coronal scales on the back 



of the anthers, notched .... 33. Peeqdlaeia. 



Corolla salver-shaped, coriaceous. Coronal scales (in 



Indian species) 34. Stephanotis. 



Corolla-lobes long, doubled down inwards in bud , . . .35. Lyqisma, 



tt Corolla rotate. 



Cymes various. Column minute. Coronal processes fleshy . 36. Ttlophoba. 

 Cymes umbelliform. Column large ; coronal processes simple 37. Tbbutleea. 

 Cymes racemiform. Column minute, fleshy ; coronal pro- 

 cesses 2-fid ....:.... 38. COSMOSTIGMA. 



Cymes umbelliform, pendulous. Coronal scales spreading, 

 cuspidate ,..,,.., 39, Deegea, 



*** Corolla valvate. Coronal processes adnate to the staminal column. 



Corolla small, rotate. Column short, corona stellate. Fol- 

 licles slender iQ. Hbtbeostemma. 



Corolla large, rotate. Column short, corona stelfete.. Fol- 

 licles stout 41. DlTTOCERAS. 



Corolla urceolate or disciform. Corona cupular, fleshy .. . 42. Oianthus. 

 Corolla minute, urceolate. Coronal scales membranous, erect 43. Dischidia. 



Corolla rotate. Corona very large, stellate 44. Hota. 



Corolla cupular. Corona large, stellate ....... 45. Physostelma. 



Corolla-tube short, lobes long subulate. Ovary sunk in the 

 calyx-tube ,,..,...,,.,.,... 46. Ptcnoehaohis. 



Teibe V. Ceropegrieae. Anthers incumbent on the stigma, without a 

 membranous tip ; pollen-masses one in each cell (10 in all) sessile in pairs on 

 the corpuscle, erect or horizontal. Corolla-lobes valyate in all, 



