秀丽马先蒿 xiu li ma xian hao

Herbs perennial, 10--40 cm tall. Stems usually single, erect, unbranched, often slender, long woolly. Basal leaf petiole ca. 1/2 to as long as leaf blade, pubescent; leaf blade lanceolate, pinnatisect; segments oblong, pinnatipartite, dentate, teeth callose. Stem leaves similar to basal ones but smaller, distal ones shorter petiolate. Inflorescences oblong, dense or elongated spikes, often scabrously long woolly; proximal bracts ca. as long as calyx, leaflike, middle ones pinnately 3--5-lobed. Pedicel ± absent. Calyx campanulate, 8--10 mm, ± leathery; lobes 5, broadly triangular, wider than long. Corolla yellow, 2--2.5 cm; tube erect, falcate apically, shorter than galea; galea short, beakless; lower lip slightly shorter than galea, not ciliate. 2 filaments pubescent, 2 glabrous. Capsule compressed, obliquely oblong, 1--1.2 cm, apiculate. Fl. Jun--Jul, fr. Jul--Aug. 2n = 16.

Meadows, frequently in alkaline places. Heilongjiang, Nei Mongol, Xinjiang [Mongolia, Russia (Siberia, Far East)].