Thelypodium flexuosum
in A. Gray et al., Syn. Fl. N. Amer. 1(1,1): 175. 1895.
Perennials; (caudex woody, covered with persistent petiolar remains); somewhat glaucous, glabrous throughout. Stems (often subdecumbent), branched basally, (flexuous), 1.5–5.6 (–8.5) dm. Basal leaves: petiole 1–6.5 (–13) cm; blade often lanceolate, sometimes oblong or oblanceolate, (2–) 3.5–16.5 (–20.5) cm × (5–) 10–25 (–45) mm, margins entire. Cauline leaves (ascending); sessile; blade lanceolate to linear, 1–7 (–11) cm × 2–7 (–14) mm, (base sagittate to somewhat amplexicaul), margins entire. Racemes (few-flowered, corymbose), elongated in fruit, (flower buds oblong). Fruiting pedicels usually horizontal to divaricate, rarely divaricate-ascending, straight or slightly curved upward, slender, (2.5–) 4–9 (–16) mm, slightly flattened at base. Flowers: sepals erect, oblong, 3–4 (–4.5) × 1–1.5 (–1.7) mm; petals lavender or white, often spatulate, sometimes oblanceolate or obovate, 6–9 (–10) × (1.5–) 2–3 (–3.5) mm, margins not crisped, claw strongly differentiated from blade, (slender, 2–3.5 (–4) mm, narrowest at base); nectar glands lateral, median glands absent; filaments tetradynamous, median pairs 3–4 (–5) mm, lateral pair 2–3.5 (–4) mm; anthers included, oblong, 1–2 (–2.5) mm, not circinately coiled; gynophore (stout), 0.5–1 mm. Fruits erect to ascending, torulose, slightly incurved or straight, terete, 1–2.5 (–4.2) cm × 0.8–1 (–1.5) mm; ovules 12–30 per ovary; style cylindrical, (0.3–) 1–2 (–3) mm. Seeds (1–) 1.3–1.5 × 0.5–8 (–1) mm. 2n = 26.
Phenology: Flowering Apr–Jun.
Habitat: Often tangled among woody shrubs in moderately to strongly alkaline sandy loam or clay, open deserts
Elevation: 1000-2400 m
Distribution
Calif., Idaho, Nev., Oreg.
Discussion
Selected References
None.
Lower Taxa
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