长齿列当 chang chi lie dang

Phelipaea coelestis Reuter in A. de Candolle, Prodr. 11: 5. 1847; Orobanche coelestis f. persia Beck; O. heldreichii (Reuter) Beck; Phelipaea heldreichii Reuter; Phelipanche coelestis (Reuter) Soják.

Herbs biennial, 15-40 cm tall. Stems unbranched, white glandular pubescent, glabrescent upward. Leaves ovate-lanceolate or lanceolate, 1-1.5 cm. Inflorescences spicate, 6-18 cm; bract ovate-lanceolate, 0.8-1.8 cm, along with bractlets, calyx, and corolla glandular pubescent abaxially; bractlets narrowly lanceolate or linear, shorter than calyx, subsessile or short pedicelled. Calyx short campanulate, 1-1.5 cm, 4-lobed; lobes narrowly lanceolate, ca. 2/3 as long as calyx. Corolla blue, tubular; tube slightly whitish, pubescent adaxially, 1.8-2.6 cm; upper lip 2-lobed; lower lip longer than upper. Stamens pubescent basally, sparsely glandular pubescent upward, rarely glabrous; anthers sparsely villous, base mucronate. Ovary ellipsoid-globose. Style short, glandular pubescent; stigma 2-lobed. Capsule ellipsoid-globose, 0.9-1.1 cm. Seeds ellipsoid or globose, 0.4-0.6 mm. Fl. May-Jun, fr. Jun-Sep.

S Xinjiang [S Kazakhstan, Pakistan, Russia, Tajikistan, Turkmenistan, Uzbekistan; SW Asia, Europe].

Parasitic on species of Centaurea Linnaeus, Eryngium Linnaeus, Micromeria Bentham, Phlomis Linnaeus, Tanacetum Linnaeus, and Thymus Linnaeus.