ers, of a singularly changeable blue colour, with exserted 
scales from the tube, remind one rather of a Boragineous 
than an Asclepiadeous plant. In Genus it borders upon 
Oxyreratum and Tweepia; and [ think it may safely be 
referred to the latter. 
Descr. Stems twining, herbaceous, and, as well as the 
foliage, peduncles, calyx, and even in a degree, the outside 
of the corolla, clothed with fine woolly down. Leaves op- 
posite, on short petioles, oblong, between cordate and has- 
tate at the base. Peduncles axillary, from one of the two 
opposite leaves, bearing an umbel of three to four flowers. 
Calyx deeply cut into five, erect, lanceolate segments. Co- 
rolla between rotate and salver-shaped, having a conspicu- 
ous, almost globose tube, and five spreading, oblong, very 
obtuse segments ; when first open, pale-blue, with a slight 
tinge of green, then purplish, and when withered, lilac. 
Within the corolla are five erect, deeper blue, fleshy scales, 
exserted, their apices recurved, emarginate. Stamens com- 
bined into a tube, erect, appressed to the base of the white 
pyramidal stigma, which is cleft into two closely-placed 
segments. Pollen-masses pendent from a triangular, mem- 
branous appendage, on each side the base of which is a 
linear-oblong, black, shining spine. Pistils two. 
Fig. 1. Section of the Calyx with the Pistils. 2. Section of the Tube 
of the Corolla, showing the Scales, Staminal Column, and Stigma, 3. Inside 
view of an Anther, separated from the rest, showing its two Cells. 4, Pol- 
len-masses :—magnified. 
