LXXXV. ASCLEPIADEiE (bROWN). 235 



a membranous appendage. PoUen-contents of each anther-cell united into one 

 waxv mass. Pollen-masses opaque, without a pellucid margin, attached m pairs to 

 each of the pollen-carriers hy short or long caudicles, from which they are 

 pendJous in the anther-cells. Pollen-carriers turgid, rarely fattened, with a 

 dorsal suture, hard and horny, varying from reddish-brown to black. 

 Corona very small and inconspicuous, arising from the 

 filament-part of the staminal-column, easily over- 

 looked and may be thought to be absent. 

 Apex of the style produced into a beak much beyond 

 the anthers. 

 Corona of 5 minute teeth or lobes alternating with 



the subsessile anthers at their base . . 13. Microstephakus. 



Corona of 5 minute fleshy tubercles opposite the 

 anthers, near the middle of the shoit filament 

 part of the staminal column . • .14. PoDObTELMA. 



Apex of the style not produced beyond the anthers, 

 corona of 5 fleshy tubercles. (See also Tylo- 

 vhora and Xiismalobium Holubii, and X. de- 

 ^ . . ^ .32. Tylopuokopsis. 



cipiens) . . . 



Corona distinct, in 1 or 2 series. 



Corona of 5 free lobes arising from the corolla-tube, 

 none on the staminal-column, but sometimes 

 in^^erted on the corolla just above its base . . 15. GLOSSO>EilA. 



Corona simple or double, arising from the sfammal- 

 column or at its very base in the angle where the 

 column and corolla unite. 

 Covona double, i.e. in two series. 



Outer corona annular or cup-shaped, often pen- 

 tagonal, truncate, shortly lobed or denticu- 

 late. 

 Leafless flesliv twiners or bushes; inner 



coronal-lobes not spurred at the base . 26. Sarcostemma. 

 Leafy twiners ; inner coronal-lobes spurred at 

 the base . • • • ' 



Outer corona flattened out and adpressed to the 

 base of the corolla, obscurely lobulate; 

 inner coronal-lobes oblong, refracted and ^^^^.g^j^^^ 



accumbent on the outer corona . • • 28- DiPLOSTlGilA. 



Corona in one series, no outer corona, but often 

 furnished with appendages on the inner face 

 of the lobes or tube formed by their union. 

 Coronal-lobes connate into a tube or cup, at least 

 at their base, 5- or 10-lobed or toothed at 

 the top and sometimes with minute teeth 

 between the principal teeth, with or with- 

 out a tooth, lobe, thickening or keels within 

 in front of the 5 principal lobes or teeth. 

 Corona with the 5 principal teeth or lobes 

 alternating with the corolla-lobes, often 

 furnished with appendages or keels ^^ ^^^^^^^^^,^ 

 within . . • ,' , i 1 u * 



Corona with its 5 deeply concave-hooded lobes ,^^^^,,,,,. 



opposite the corolla-lobes . . • «5^- -^ 



Corona of 5 distinct lobes usually quite free, 

 occasionally confluent at the base, but 



