箭报春 jian bao chun

Primula farinosa Linnaeus subsp. fistulosa (Turkevicz) W. W. Smith & Forrest.

Herbs perennial. Leaves forming a rosette; petiole obsolete or inconspicuous, broadly winged; leaf blade oblong to oblong-oblanceolate, 2--6(--13) X 0.5--1.5 cm, efarinose, base attenuate, margin irregularly denticulate, apex acuminate to acute. Scapes 5--20 cm, elongating to 28--49 cm in fruit, fistular, 4--6 mm in diam. at base, constricted below inflorescences; umbels globose, usually many flowered; bracts many, oblong-ovate to ovate-lanceolate, 3--4(--6.5) mm, base slightly gibbous, apex acute. Pedicel usually 0.8--1.5 cm, glandular pubescent. Flowers heterostylous. Calyx cup-shaped, 4--5(--6) mm, gradually dilated upward from base, parted to 1/3--1/2; lobes oblong-lanceolate, apex acute. Corolla rose-violet; tube 6--7 mm; limb 0.8--1.4 cm wide; lobes obovate, deeply emarginate. Pin flowers: stamens at middle of corolla tube; style reaching mouth. Thrum flowers: stamens in upper 1/2 of corolla tube; style ca. 1.5 mm. Capsule globose, nearly as long as calyx. Fl. May-Jun.

Wet areas in lowlands, meadows. Heilongjiang, Nei Mongol [Mongolia, E Russia].