Stems 3.5–8.5 dm, distal portions woolly. Leaves: basal leaves smaller than proximal cauline leaves; cauline leaves erect, linear; proximal leaf blade 8–40 cm × 3–16 mm, decreasing in size distally, glabrous. Inflorescences corymbose, open. Flowers: tepals reflexed at anthesis, yellow, triangular, 3–4 × 1–2 mm, densely woolly abaxially, apex brownish to maroon, adaxial crest bright yellow; stamens erect-spreading at anthesis, 1.5–3 mm; style persistent, ± equaling stamens, stigmatic area slightly 3-lobed. Capsules enclosed by tepals before dehiscence, 3–4 mm diam.; beak prominent. Seeds whitish, 1–1.5 × 0.5 mm; seed coat finely open-reticulate.
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