Chascanum E.Mey.

Erect or spreading perennial herbs or undershrubs, often quite woody at base and often densely pubescent Leaves opposite or subopposite, mostly ovate or oblong, toothed or incised-dentate, rarely ± entire, ± petiolate. Flowers sessile or shortly pedicellate in terminal spikes or spike-like racemes; rhachis not excavated; bracts small and narrow; bracteoles minute or absent. Calyx narrowly tubular, 5-ribbed and 5-angled, somewhat oblique, 5-toothed, dilating and splitting longitudinally at maturity. Corolla white, yellowish or pink, infundibuliform or hypocrateriform; tube slender, straight or curved, often widened at apex, glabrous outside, pilose inside between stamens; limb ± oblique, with 5 subequal or unequal lobes, ± 2-lipped. Stamens 4, didynamous, inserted in upper part of the corolla-tube, included or slightly exserted. Ovary cylindrical or narrowly oblong, glabrous, 2-locular, each locule with one basal anatropous ovule; style terminal, filiform, elongate; stigma ± oblique, sub-bilobed. Fruit straw-coloured to black, oblong, of 2 1-seeded linear-oblong nutlets ribbed on outer surface, sometimes winged at apex, minutely verruculose-asperulous on seed-part inside. Seeds linear, exalbuminous.