Lepidium mossii Thell.

Perennial herb with erect annual shoots up to 20 cm high. Stems densely and minutely puberulous. Basal leaves in a rosette, 4-6 cm long, oblanceolate, entire or few-toothed, petiolate, the base of the petiole expanded; lower surface and margin of petiole puberulous; upper surface glabrous. Stem leaves few, sessile, lanceolate or oblanceolate, entire, lower surface and midrib puberulous. Racemes terminal, fairly lax in fruit; rhachis densely puberulous. Pedicels densely puberulous; in fruit 1.5-2.5 mm long (the lower ones sometimes up to 4 mm), erect or slightly outward curving. Sepals 0.7-0.9 mm long, ovate-oblong or ovate, green or tinged with purple, membranous-margined. Petals 0.4-0.5 mm long, spathulate, white. Stamens 2; filaments subulate. Nectaries filiform, 0.2-0.3 mm long. Siliculae 2.5-2.8 x 1.8-2 mm, ovate, very shallowly emarginate at the apex, the short style exserted (according to Thellung the fruits measure 3-3.5 x 2-5 mm).