Description from Flora of China
Buchnera densiflora Bentham, Scroph. Ind. 41. 1835.
?Perennials, ca. 25 cm tall, entirely hispid. Stems erect. Leaf blade linear, ca. 1 cm. Inflorescences terminal lax spikes; bracts longer than calyx. Calyx 5-6 mm, 5-ribbed; lobes nearly as long as tube, awn-shaped. Corolla tube ca. 1 cm, slightly curved above middle; upper lip emarginate. Capsule enveloped in calyx, oblong, ca. 2.5 mm.
Only one specimen has been seen. Its characters of calyx, corolla tube, upper corolla lip, and capsule are consistent with the original description. However, the corolla of the specimen is not intact and the above description is incomplete.
Yunnan (Mengzi Xian) [India, Sikkim].