552 



CXLV. ASCLEPIADE^. 



Cijnanchum. 



Anther, inner face 



vmag.)' 



Cynanchum. 



Pollen-masses pend,eufc to the 



base of the st^matic corpuscule 



(mag.). 



Vincetoxicum, 

 Flower cut vertically (mag.;- 



Pei'iplocOr. 



Anther, partly in profile 



(mag.). 



Periploca. 



Anther, dorsal face 



fmag.). 



Stapelia. 

 Thick, aphyllous stem, with toothed 

 angles, bearing an umbel of flowers. 



Stapelia europcea. 

 Flower (mag.). 



Stapelia. 

 PoUen'massea fixed to the top of 

 the stigmatic corpQscule (mag.). 



Periploca. 



Pollen formed of 4-poUen 



granules (mag.). 



jointed, knotty, sometimes fleshy {Stapelia). Leaves opposite, rarely whorled or 

 alternate, obsolete or rudimentary in the fleshy species, petioled, simple, entire, ex- 

 stipulate, or with interpetiolar bristles. Flowers 5 , regular, very often in umbels 

 or panicles, rarely in cymes or racemes, very rarely solitary ; peduncles axillary or 

 interpetiolar. Galtx free, 5-fld or -partite, sesbivati on imbricate. Corolla hypogy- 

 nous, monopetalous, deciduous, campanulate,* urceolate, hypocrateriform, infiindibu-- 



