LXXXV. ASCLEPIADE^ (bROWn). 239 



carriers hy short caudicles, erect^ ascending, or horizontal in the anther-cells, never 

 pendulous. Pollen-carriers sometimes with a wing-like expansion on each side 

 horny, hard, dark-coloured. Stems herbaceous or fleshy, often twining, with toell- 

 developed leaves, rarely leafless and then without distinct angles. 



N.B. Possibly Oncostemma and Nanostelma may belong to this tribe, but tlie 

 pollen-masses are not described and I have not seen specimens of them. 



Corolla-tube usually elongated and more or less inflated 



at the base, or if short, then distinctly longer than 



broad and rather narrow, never broadly cam- 



pauulate. 



Coronaof Serect /^-shaped lobes adnate to thestaminal- 



coluran, with free margins .... 43. Ortiianthera. 

 Corona double ; the outer cup-shaped, entire or 5-10- 

 toothed, or of 5 bifid or bipartite la*bes more or 

 less adnate to the inner coronal-lobes and often 

 appearing to form one series witli them, or re- 

 duced to minute pouches alternating with the 

 stamens; inner corona of 5 lobes opposite the 

 anthers. 

 Flowers sometimes solitary, but usually 2 to many 

 in sessile or pedunculate fascicles or simple 

 umbel-like cymes at the nodes or terminal, 

 rarely simply racemose along the peduncle or 

 with the peduncle bearing 2-3 few-flowered 

 fascicles scattered along it, and then with the 

 pedicels not more than \-^ in. long . . 44. Ceropegia. 



Flowers in 2 to several fascicles scattered along 

 a simple peduncle or along the branches of a 

 cymose panicle j pedicels very slender, more 



than ^ in. long 45. Riocreuxia. 



Corolla-tube short and not longer than broad, or none, 

 and the corolla rotate or saucer-shaped. 

 Corona of 5 small lobes with hairy tips, inserted 

 on the corolla at the sinuses between the lobes, 

 and sometimes with an inconsjiicuous fleshy 

 ring at the base of the staminal-column . . 42. Leptadema. 



Corona double, entirely arising from the staminal- 

 column, none on the corolla. 

 Flowers in pairs in a terminal raceme or lax panicle 47. Texaris. 

 Flowers 1-4 at the nodes or many in a terminal 



umbel . 46. Brachystelma. 



Tribe VI. Stapeliese. — Pollen-masses and other characters as in Cero- 

 pegieffi, but differing as follo.ws. Stems thick and fleshy, 3- to many-angled, 

 usually dwarf, erect or procumbent, tuberculate-tessellate, or toothed along the 

 anglea, leafless or the teeth tipped xvith rudimentary or small subulate fleshy 

 leaves, or the tubercles or teeth bearing stout conical or spine-like or slender 

 bristles. Flowers fleshy. Corona arising from the staminal-column, none on the 

 •corolla. 



Stems cylindric, tessellately several-angled, not spiny or 



bristly 48. Echidnopsis. 



Stems not tessellate, of ten spiny-toothed or with bristle- 

 like tips to the tubercles. 



