Descr. Trunk erect, straight, slender, branched slightly 
and only at the top, where alone it is leafy. Leaves two to 
three feet and more long, impari-pinnate. Leaflets oppo- 
site, from five to ten or twelve pairs, ovate, glabrous, (as 
is every part of the plant,) waved, serrated, strongly penni- 
nerved, the nerves prominent beneath. The rachis round- 
ed, swollen at the insertion of the leaflets. Panicle of 
many large, handsome flowers, so compact as to form a 
thyrsus. Peduncles and pedicels red, rough, with raised 
points. Calyx red, oblong, somewhat inflated, split to the 
base on one side, the apex bifid. Corolla two inches long: 
tube inflated upwards, yellowish. Limb two-lipped, white 
mottled with purple: upper lip of two, lower of three or 
four obtuse, waved and somewhat crenated lobes.  Sta- 
mens four, and didynamous ; a fifth solitary stamen is pre- 
sent when the corolla is six-lobed: and there is besides the 
rudiment of a sixth stamen. Anthers large, white. Germen 
linear, inserted upon a yellowish gland or disk. Style white, 
filiform, bent at the base. Stigma of two lanceolate plates. 
1, Calyx and Pistil. 2. Base of the Corolla with Stamens. 3. Pistil, 
and hypogynous Disk :—magnified. 
