William Jackson Hooker

“ Calyx as in the genus, glanduloso-pilose, tinged with purple, having the dorsal scale much enlarged in fruit. Corolla orange-scarlet, glanduloso-pilose, very long, many times longer than the calyx, the tube much curved, slender in the lower half, gradually widening upwards, so as to be funnel-shaped: the mouth inclining downwards: the limb of two lips, the lower lip ovate, acute, entire, deflexed, the upper much shorter, galeate, obtuse, three-lobed, middle lobe emarginate. ”

“ Leaves opposite, large, downy, cordate, membranaceous, coarsely and almost sinuato-dentate, pale green, reticulated and wrinkled with the copious venations. Petioles an inch and a half long, pilose. Racemes very long, terminal upon the branches, simple, or ramose, many-flowered. ”