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FOC | Family List | FOC Vol. 8 | Brassicaceae | Dipoma

1. Dipoma iberideum Franchet, Bull. Soc. Bot. France. 33: 405. 1886.

蛇头荠 she tou ji

Dipoma iberideum var. dasycarpum O. E. Schulz; Dipoma iberideum f. pilosius O. E. Schulz.

Stems slender, (3-)5-15(-22) cm, simple, pubescent with stalked or subsessile forked trichomes to 1 mm. Basal leaves with petioles (1-)2-7 mm; blade obovate to oblanceolate, 3-8 × 2-5 mm, 3-5-lobed or -toothed near apex, rarely entire. Cauline leaves sessile or attenuate to a petiolelike base to 4 mm; blade oblong, obovate, spatulate, or oblanceolate, 0.5-1.5(-3) cm × 2-5(-7) mm, margin entire, sometimes ciliate with subsetose trichomes, apex 3-5-toothed or -lobed; terminal tooth or lobe to 6 × 4 mm. Fruiting pedicels strongly curved, often forming a complete loop, 4-8(-12) mm, pubescent with simple and forked trichomes. Sepals pink or green, oblong, 1.5-2.5 × 0.7-1 mm, membranous margin 0.1-0.2 mm. Petals white, broadly obcordate or orbicular, (3.5-)5-6(-7) × 2.5-4(-5) mm; claw 0.5-1 mm. Filaments white, 2-3.5 mm; anthers purple, ca. 0.5 mm. Fruit with 1 side aborting; valves thin papery, 3-4 × 1.7-2.5 mm, glabrous or with simple, flattened trichomes to 0.4 mm, rounded or rarely with a dorsal appendage to 1 mm; replum flattened, to 1.5 mm wide; gynophore obsolete or to 0.1 mm; style (1-)2-3.5 mm. Seeds 2.5-3(-3.5) × 1.5-2(-2.5) mm, reddish brown. Fl. Apr-Jul, fr. Jul-Sep.

* Alpine gravel, mountain slopes, limestone drift, open stony meadows, scree, pastures, alpine meadows; 3000-4600 m. Sichuan, Yunnan.


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