ad 
Anisopus. } LXXXV. ASCLEPIADEE (BROWN). 417 
‘membranous pubescent ring } lin. high, arising from the mouth of the 
corolla-tube ; inner coronal-lobes } lin. long, arising near the apex of 
the stipitate staminal-column, tumescent, gibbous, with the apex 
narrowed and inflexed on the apex of the style. Staminal-column 1} 
lin. long.— Marsdenia bicoronata, K. Schum. in Engl. Jahrb. xxiii. 235. 
Upper Guinea. Without locality, Afzelius. 
I have not seen this plant and refer it to the genus Anisopus with some hesita- 
tion ; but the situation of the outer corona at the mouth of the corolla-tube seems to 
indicate an alliance with that genus, and it may even be the same as 4. Mannii, 
N.E. Br. A specimen (Staudt, 356) received from Berlin, under the name of 
Marsdenia bicoronata, K. Schum., does not agree with the description, and is A. 
Mannii. 
39. MARSDENTIA, R. Br.; Benth. et Hook. f. Gen. Pl. ii. 772. 
Calyx 5-partite. Corolla-tube campanulate ; lobes 5, erect, spreading 
or rotate-campanulate, overlapping to the left and straight or slightly 
twisted in bud. Corona of 5 fleshy lobes arising from the staminal 
column, with their basal part adnate to it, but often with free margins, 
or projecting like tubercles, which are sometimes confluent at the base, 
producing more or less the appearance of an outer corona, their apical 
part free, erect or somewhat connivent, applied to the backs of the 
anthers. Staminal-column arising from or near the base of the corolla ; 
anthers erect, with the cells usually more or less concealed under the 
margin of the dilated part of the style; appendages membranous, free 
or connate, more or less incumbent on the top of the style. Pollen- 
masses erect, solitary in each anther-cell, attached in pairs to the pollen- 
carriers by short or elongated, moderately stout caudicles. Style 
depressed, convex, conical, or produced into a long beak at the apex. 
Follicles with a thick pericarp, smooth, sometimes winged. Seeds 
crowned with a tuft of hairs—Climbing or erect perennials. Leaves 
Opposite. Flowers small or of moderate size, arranged in umbel-like 
cymes, or in small sessile umbels or clusters scattered along the 
branches of the cymes or panicles, which are lateral at the nodes or 
axillary.—Dregea, E. Meyer; Benth. et Hook. f. Gen. PIS le Vidoes 
Pterophora, Harv. Gen. South Afr. Pl. ed. i. 223. Traunia, K. Schum. 
in Notizbl. Konigl. Bot. Gart. Berlin, i. 23. 
A large genus, widely distributed throughout the tropical and subtropical 
regions. 
I cannot find any character whatever to separate Dregea from Marsdenia. The 
coronal-lobes of Dregea are erect in the species on which Meyer founded his genus, 
as well as in all the others that I have examined, but in one or two they are very 
much laterally compressed, and as viewed from above present a stellate appearance. 
*Corolla-lobes 2-44 lin. long. : 
Stem and petioles densely villous with long spreading a 
hairs. . : z ° - ° . - 1. M. crintta. 
Stem and petioles pubescent, subtomentose or glabrous, 
without long hairs, except in M. angolensis. 
VOL. IV. 2E 
