藏北扇叶芥 zang bei shan ye jie

Christolea baiogoinensis K. C. Kuan & Z. X. An in C. Y. Wu, Fl. Xizang. 2: 388. 1985.

Plants scapose, villous. Trichomes simple and short-stalked, forked, straight, to 1 mm. Stems absent. Basal leaves subfleshy; petiole 0.4-1.6 cm, persistent, villous, ciliate, somewhat papery at base; leaf blade broadly ovate, suborbicular, or obovate, 4-8 × 3-6 mm, villous, base obtuse or cuneate, margin 3-7-toothed, apex acute. Cauline leaves absent. Flowers solitary from basal rosette. Fruiting pedicels ascending-divaricate, straight, 0.5-2 cm, villous. Sepals free, oblong, 4-6 × 1.5-2.5 mm, usually persistent, pilose, base not saccate, margin membranous. Petals purplish, broadly obovate, 7-1.2 cm × 3.5-4.5 mm, apex subemarginate; claw 4-6 mm. Filaments white, dilated at base, toothless, median pairs 3.5-5 mm, lateral pair 2-2.5 mm; anthers 1-1.2 mm. Ovules 30-40 per ovary. Fruit ovate or lanceolate, 1-2.5 cm × 6-9 mm, flattened, sessile, straight; valves prominently reticulate veined; replum and valves villous; septum complete; style 0.5-1 mm; stigma capitate, 2-lobed. Seeds oblong, 1.5-2 × 0.8-1.1 mm. Fl. Jun-Jul, fr. Jul-Aug.

* Open sand and gravel; 4700-5600 m. Qinghai, Xizang.