Chamaesphacos longiflorus Bornmüller & Sintenis.

Stems erect, 1410-17 cm, spreading branched from base. Petiole ca. 1 cm; leaf blade oblong-ovate to oblong, 1.2-3 cm × 5-7 mm, base cuneate, margin spinescent-serrate, apex subacute. Floral leaves short petiolate or ± sessile, similar to stem leaves. Calyx 6-8 mm, to 1 cm and campanulate in fruit, apex ± floccose-villous outside; teeth narrowly triangular, apex subulate-acuminate, posterior teeth longer. Corolla purple, puberulent outside, 1.1-1.4 cm, limb ca. 3 mm; upper lip oblong, apex emarginate or ± entire; lower lip shorter, lobes spreading. Nutlets ca. 3 × 1 mm. Fl. Apr-May, fr. May.

Sandy areas. Xinjiang [Afghanistan, Kazakhstan, Russia, Tajikstan, Turkmenistan, Uzbekistan; SW Asia].