Page:The Flora of British India Vol 4.djvu/11

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xcv. asclepiadeæ. (J. D. Hooker.)

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

Corona of a 10-lobed ring, and 5 horny processes behind the anthers

25. Holostemma.

Corona annular. Leafy erect or twining herbs or shrubs

26. Cynanchom.

Corona annular. Leafless straggling shrubs

27. Sarcostemma.

Tribe IV. Marsdenieæ. Anthers with a membranous inflexed tip (absent in Physostelma and rarely in Hoya); pollen-masses solitary in each cell (10 in all), sessile, or pedicelled in pairs on the corpuscle, erect (rarely horizontal or pendulous in Tylophora).

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

Stem twining. Corolla-lobes- short, Corona

28 Sarcolobus.

Stem pendulous. Corolla-lobes long. Stigma included

29. Pentasacme.

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

30. Gymnema.

** Corolla-lobes overlapping. Coronal processes on the staminal column, rarely 0.

* Corolla urceolate companulate or salver-shaped.

Corolla urceolate. Coronal processes minute or 0. Stigma included

31. Gongronema.

Corolla urceolate or salver-shaped. Coronal scales on thr back of the anthers, simple

32. Mabsdenia.

Corolla rotate or salver-shaped. Coronal scales on the back of the anthers, notched

33. Pergularia.

Corolla salver-shaped, coriaceous. Coronal scales (in Indian species)

34. Stephanotis.

Corolla-lobes long, doubled down inwards in bud

35. Lygisma.

** Corolla rotate.

Cymes various. Column minute. Coronal processes fleshy

36. Tylophoba.

Cymes umbelliform. Column large; coronal processes simple

37. Treutlera.

Cymes racemiform. Column minute, fleshy; coronal processes 2-fid

38. Cosmostigma.

Cymes umbelliform, pendulous. Coronal scales spreading, cuspidate

39. Drkgka.

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

Corolla small, rotate. Column short, corona stellate. Follicles slender

40. Heterostemma.

Corolla large, rotate. Column short, corona stellate. Follicles stout

41. Dittoceras.

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. Hoya.

Corolla cupular. Corona large, stellate

45. Physostelma.

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

46. Pycnorhachis.

Tribe V. Ceropegiese. 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 valvate in all.

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