Descr. Stems long, slender, twining, clothed, as well as 
the leaves and calyx, with short, pale, silky pubescence. 
Leaves opposite, cordate, or cordato-hastate, membranous, 
acute, angled at the margin more or less, particularly near 
the base, dark green above, paler beneath. Petioles about 
as long as the leaves, singularly winged on each side; the 
wings broader towards the upper extremity. Peduncles ax- 
illary, solitary, opposite, longer than the petioles. Exte- 
rior calyx of two large ovato-cordate, inflated, membrana- 
ceous leaves: inner one small, cup-shaped, with several 
irregular teeth or segments. Corolla large ; the tube longer 
than the outer calyx, inflated upwards, black purple within, 
paler without : Limb oblique, of five, nearly equal, somewhat 
obcordate, spreading lobes, buff-coloured in «, white in our 
var.8. Stamen wholly concealed within the tube: Anther 
white, two-celled, ciliated. Germen ovato-globose. Style 
white, filiform: Stigma of two unequal lips, the lower one ~ 
the broadest, and concave. ‘S 
Fig. 1. Outer Calyx (or bracteas). 2. Stamen. 3, Calyx and Pistil :— 
