丝多毛列当 si duo mao lie dang

Orobanche major Linnaeus f. krylowii (Beck) Beck.

Herbs perennial, 20-40 cm tall. Stems glabrous below, sparsely glandular pubescent above. Leaves ovate-lanceolate or lanceolate, 1-2 cm X 3-7 mm, lower ones glabrous, others glandular pubescent. Inflorescences spicate, 6-20 cm, usually shorter than stem; bract ovate or broadly lanceolate, 1.2-1.8 cm X 3-7 mm, glandular pubescent; bractlets absent. Calyx 6-12 mm, 2-parted; segments unequally 2-lobed or entire; lobes narrowly lanceolate, apex acuminate. Corolla tubular-campanulate, pale yellow, curved, glandular pubescent, 1.7-2.2 mm, constricted below middle; upper lip subentire; lobes subglabrous at margin. Filaments 0.8-1.4 cm, pubescent along basal 1/2-3/4, glandular above; anthers oblong, villous. Style sparsely glandular pubescent. Capsule ellipsoid. Seeds oblong. Fl. Jun-Jul, fr. Jul-Aug.

Slopes, thickets, roadsides, forests; 1000-2500 m. Xinjiang [Kazakhstan, Kyrgyzstan, Russia].

Parasitic on species of Thalictrum Linnaeus.

No material of this species has been found in Chinese herbaria.