Willdenow remarks, that he had seen several varieties 
with narrower or broader leaves, blue and white corollas, 
and vexilla smooth or downy outside. Decandolle distin- 
guishes them with a suggestion that possibly several species 
are confounded under the name of C. virginiana. We, 
having no means of determining the latter question, content 
ourselves with describing the plant before us, so that it 
may be rendered available to whomsoever may find leisure 
to extricate the synonymy of the species. 
Stem twining, smooth, striated. Leaves of one pair, 
with an odd one, ovate-oblong, membranous, smoothish, 
subrugose, with a downy petiole. Peduncles axillary, 2 or 
3-flowered, the length of petioles. Calyx 5-fid, with subu- 
late, downy segments. Bractea ovate-lanceolate, the length 
ofcalyx. Corolla large, resupinate, lilac-coloured, with an 
emarginate vexillum, calcarate at base. Pod long, linear, 
smooth. 
Io Loy, 
