552 



QXLV. ASCLEPIADEJE. 



Cynanchum. 



Anther, inner face 



(mag.). 



Ci/nanchuin. 



Pollen -masses pendent to the 



baae of the stigmatic corpuscule 



(mag.). 



Vincetoxicum. 

 Flower cut vertically (mag.;. 



Ptriploca, 



Antber, partly in profile 

 (iung.). 



Periplota. 



Anther, dorsal face 

 (mag.). 



Staptlia. 



Thick, aphyllous stem, with toothed 

 angles, bearing an umbel of flowers. 



Stapelia europcea. 

 Flower (mag.). 



Stapelia, 



Pollen-masses fixed to the top of 

 the stigmatic corpuacule (mag.). 



Periploca. 



Pollen formed of 4-pollen 

 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 $ , regular, very often in umbels 

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

 interpetiolar. CALYX free, 5-fid or -partite, aestivation imbricate. COROLLA hypogy- 

 nous, monopetalous, deciduous, campanulate, urceolate, hypocrateriform, infundibu- 



