川滇山萮菜 chuan dian shan yu cai

Eutrema lancifolium (Franchet) O. E. Schulz; Goldbachia lancifolia Franchet; Hesperis spectabilis (J. D. Hooker & Thomson ex Fournier) Kuntze; Sisymbrium hookeri Fournier; Sisymbrium spectabile J. D. Hooker & Thomson ex Fournier.

Herbs 30-80(-110) cm tall, sparsely to densely crisped pilose at least along leaf margin and midvein; rhizomes short. Stems erect, simple at base, branched above. Basal leaves rosulate, somewhat fleshy; petiole (2.5-)4-12(-17) cm; leaf blade ovate, oblong, or lanceolate, (1-)2-6(-8) × (0.7-)1.5-4(-5) cm, base cordate or rounded or cuneate, margin entire, apex obtuse or subacute. Middle cauline leaves lanceolate, oblong-lanceolate, or ovate, 3-6(-8) × 0.7-2(-3) cm, pinnately veined, sessile, base rounded or auriculate, margin denticulate or sparsely so near base, apex acuminate or acute. Infructescence lax raceme, main branch 10-25(-40) cm. Fruiting pedicels divaricate, (0.5-)0.7-1.8(-2.2) cm. Sepals ovate, 2-2.5 × 1-1.5 mm, caducous. Petals white, spatulate, 4-5 × 2.5-3 mm. Filaments white, 1.5-2 mm, slightly dilated at base; anthers oblong, ca. 0.5 mm. Ovules 4-8 per ovary. Fruit linear or rarely oblong, (0.8-)1.2-2(-2.5) cm × 1.5-3 mm, slightly 4-angled, subtorulose; valves cuneate at both ends, with a prominent midvein; gynophore to 0.5 mm; septum perforated or complete; style 0.5-1 mm. Seeds oblong, plump, 2-3 × 1-1.5 mm. Fl. May-Aug, fr. Jul-Sep.

Streamsides, swampy or alpine meadows, among rocks; 3300-4400 m. Sichuan, Xizang, Yunnan [Bhutan, Sikkim].

A critical examination of the types of Eutrema himalaicum and E. lancifolium shows that they are indistinguishable. The species was recognized in FRPS as E. lancifolium and was recorded from Gansu, but the present authors have seen no specimens from that province.