466 



XjXXI \ . ASCIjEPlADACEiE 



Corona-scales long, filiforni Streptocaulon (p. 167). 



Corona-scales short, "broad BRAciiYLEns (p. 46H). 



Leaves alternate. A small tree .... Uileria (p. 468). 

 B. Corolla-lolDes valvate. 



Corolla-lobes glabrous, purple witliin . . . Hemidbsaius (p. 468). 



Corolla-lobes densely wMte-bearded . . . Decalepis (p. 468). 



II. rilaments connate into a staminal-tube, pollen-masses waxy, solitary in eacli cell 

 (in imirs on the pollen-carriers) or, in a few genera {Secamo7ie, Toxocarjms^ Geni- 

 anthzis), in pairs in each cell (in fours on the pollen-carriers). 

 A. Corolla-lobes contorted, ovex-lapping usually to the right. 

 (a) Corolla rotate, large, 1 in. across and more. 



Base of 1. deeply cordate 



Base of 1. rounded or cuneate .... 

 (5) Corolla rotate, middle-sized. 



Trailine: leafless shrubs 



HOLOSTEMMA (p. 468). 



Trkutlera (p. 468). 



Climbers, 1. ovate, often with a cordate base. 

 Fl. bright green, in umbelliform cymes 

 Fl. greenish-yellow and red, in corymbose 



racemes 



Climbers, 1. lanceolate ..... 



(c) Corolla campantxlate, funnel- or salver-shaped. 



Pollen-masses 2 in each cell (20 in all), 



corolla-lobes overlapping to the left 

 Pollen-masses 1 in each cell (10 in all). 

 Pollen-masses pendulous. 

 Fl. greenish-yellow, follicles densely 



clothed -with long soft sjjines 

 Fl. pure white, follicles smooth 

 Pollen masses erect. 

 Ko staminal corona. 



Corona corolline, of double raised 

 villous ridges on the inside of the 



corolla- tube 



No corolline corona, follicles solitary, 

 globose or ellipsoid, seeds without 

 coma. Littoral climbers 

 Corona scales adnate to staminal column. 

 Corolla-tube J- in, long . . . ♦ 

 Corolla-tube under J in. 

 Corona-scales large .... 

 Corona scales small or , 

 E. Corolla-lobes valvate in bud. 



PI. large, corolla J in. across or more. 

 Erect shrubs, wood soft, or branches almost 



herbaceous 



A climbing shrub, bark corky .... 

 Fl. middle-sized or small. 



Sarco&temma (p. 468). 

 Dregea (p. 468). 



CORMO STIGMA (p. 468). 



Secamone (ix 468). 



3. TOXOCARPUS. 



D^EMiA (p. 469). 

 Baphistemma (p. 469). 



4. Gymnema. 



Sarcolobus (p. 470), 

 Pergularia (p. 470). 



5. Marsdenia. 

 Gongronema (p. 471). 



6. Caloteopis. 



DITTOOBRAS (p. 472). 



Scales in the corolla-mouth between the lobes, and an undulate ring at the 

 base of staminaUube. Anthers without a membranous tip. 

 Calyx half the length of corolla, or shorter . 7. Leptadei^ia, 

 Calyx longer than half the corolla . . Orthanthera (p. 472). 

 No scales in the corolla-mouth. Anthers with a membranous inflexed tip. 

 Staminal-corona of 5 horizontally spreading 



lobes 8, Heterostemma. 



Staminal-Gorona of 5 erect lobes . , . Genianthus (p. 473). 



Cryptostegia grandiflora, Br. ; Wight Ic. 882 and 111. 1. 182, f * 9, — Syn. Nerium grandi^ 

 fioTum^ Eoxb. Commonly cultivated in gardens, probably a native of Madagascar. 

 A large climbing shrub, 1. glossy, fl. pale purple, funnel-shaped, limb l|-2 in. across. 

 Corona-scales corolline, cleft to the base into 2 long filiform segments. Follicles thick, 

 straight, divaricate, 4-5 in. long. Said to yield a good kind of Caoutchouc. 



1. CRYPTOLEPIS, K Br. ; PL Brit. Ind. iv. 5. 



Twining glabrous shrubs. FL in lax slender dicbotomous terminal or 

 axillary cymes, corolla-tube short, lobes long linear, twisted. Corona-scales 5, 

 in or above the middle of the tube, linear or spathulate. Filaments slightly 



