276 LXXXY. ASCULEPIADEH (BROWN). | Raphionaeme. 
lin. long, ovate-lanceolate, acuminate, pubescent on the back. Corolla 
only seen in the bud; tube 2 lin. long, campanulate; lobes 2~25 lin. 
long, ovate, subacute, pubescent outside, glabrous within. Coronal- 
lobes arising at the insertion of the stamens, purplish, filiform, with a 
short deltoid tooth on each side at the base. 
Lower Guinea. Angola: Loanda; on dry hilly places near Boa Vista, not 
far from the sea, Welwitsch, 4274 ! 
The specimen is in bud only, and the open flowers may exceed the dimensions 
given above, 
11. SECAMONE, R. Br.; Benth. et Hook. f. Gen. Pl. ii. 746. 
Calyx 5-partite. Corolla small, rotate or campanulate, 5-lobed to 
the middle or beyond; «stivation variable; lobes with fleshy sub- 
marginal ridges and often a central one on their basal half, which are 
decurrent on the tube within. Corona of 5 small or minute simple 
laterally flattened or subulate lobes, arising from the staminal column. 
Stamens arising from the bottom of the corolla; filaments adnate to 
the style but scarcely connate with each other, or only at the very base ; 
anthers small, erect or connivent around the dilated part of the style, 
terminated by fimbriate membranous appendages which seem sometimes 
to be connate. Pollen masses 20 (10 in all other genera except T'oxo- 
carpus and the Periplocee), very minute, globose, attached in fours to 
the rather soft pale-coloured pollen-carriers, without caudicles. Style 
usually produced beyond the dilated part and often exserted beyond the 
anthers; apical part (beyond the dilation) terete or clavate, obtuse, 
broadly truncate, bilobulate or bifid. Follicles acuminate, smooth. 
Seeds crowned with a tuft of hairs—Climbing shrubs; leaves opposite, 
often pellucid-dotted ; cymes axillary and terminal ; flowers small. 
Species many, widely spread through the tropical regions of the Old World, ex- 
tending into South Africa. os 
The flowers of all the species here described, except S. erythradenia and S gracilis, 
are very similar in structure, and the ridges on the corolla-lobes being common 
to them all are not mentioned in the descriptions. Mention of the dots in the leaves 
is also omitted, as they are not always visible in different specimens of the same 
species, or even in different leaves on the same specimen ; they are formed of minute 
crystals of lime. bakes 
The figures of the pollinia of Secamone in Engl. & Prantl, Pflanzenfam. 1v.™ 
262, fig. 76, E. & J., are not to be relied upon, the relative position of the ago 
carrier and pollen-masses being entirely erroneous, and of the other few figures : “ 
have been published, not one, so far as I have seen, is correct. They are exceedingly 
minute and therefore appear to have been badly observed. 
Besides the species described below, reference should be made t 
microstegium, K. Schum., and Gymnema crenatum, Klotzsch, which, 
scriptions, may, I think, prove to belong to Secamone. 
Corolla-tube #~1} lin. long, at least 3 as long as the 
lobes; peduncles or cymes 1—5-flowered. fe 
Young shoots and pedicels glabrous . : S . 1. S.gracilis. 
Young shoots and pedicels reddish-pubescent . . 2. 8. erythradema- 
oO Cynanchum 
from the de- 
