Thelypodium eucosmum |
Thelypodium crispum |
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arrow-leaf thelypody, world thelypody |
crisp thelypody, crisped thelypody, wavy leaf thelypodium |
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Habit | Biennials or perennials; (short-lived); glaucous, glabrous (except petioles). | Biennials or perennials; (short-lived); often glaucous, glabrous or pubescent. |
Stems | branched distally, 2–10 dm. |
branched, (0.9–)1.3–7(–12) dm, (somewhat glaucous, glabrous throughout or pubescent basally). |
Basal leaves | petiole (0.9–)1.4–3(–4.5) cm, ciliate; blade usually oblanceolate to oblong or lanceolate, rarely ovate or elliptic, (2.8–)3.5–8.8(–11) cm × (7–)10–25(–35) mm, margins often entire or repand, sometimes sinuate. |
petiole (0.7–)2–8.5 cm, ciliate; blade usually oblanceolate to spatulate, rarely obovate or lanceolate, (1.5–)2.2–15(–25) cm × (6–)10–35(–50) mm, margins often pinnately lobed to lyrate, sometimes dentate or entire. |
Cauline leaves | (ascending); sessile; blade lanceolate to oblong, 1.8–4.5(–6) cm × 5–16(–24) mm, (base amplexicaul to strongly auriculate), margins entire. |
sessile; blade linear to lanceolate, smaller distally, (base sagittate or auriculate, appressed to stem), margins usually entire, rarely dentate. |
Racemes | lax, slightly elongated in fruit, (flower buds oblong-linear). |
dense, elongated in fruit, (flower buds narrowly oblong). |
Flowers | sepals erect, linear-oblong, 5–7(–8) × (0.8–)1–1.5(–1.8) mm; petals dark purple, spatulate to oblanceolate, (6.6–)7.5–10(–11.5) × 1–1.8(–2) mm, margins not crisped, claw differentiated from blade, [slender, (3–)3.5–5(–5.5) mm, narrowest at base]; nectar glands confluent, subtending bases of stamens; filaments subequal, (4.5–)6–9(–10) mm; anthers exserted, linear to narrowly oblong, 2.5–4(–4.5) mm, circinately coiled; gynophore (1–)2.5–6(–7.5) mm. |
sepals erect to ascending, oblong to linear-oblong, (3–)3.5–6(–8) × (0.8–)1–1.8(–2) mm; petals white to lavender, linear to narrowly oblanceolate, (6–)6.5–11(–14.5) × 0.5–0.7(–1) mm, margins strongly crisped, claw differentiated from blade, (slender, 2–4 mm, narrowest at base); nectar glands surrounding bases of lateral stamens, median glands absent; filaments subequal, (2.5–)4.5–8.5(–10.5) mm; anthers exserted, linear to narrowly oblong, 2–3.5(–4.5) mm, circinately coiled, (apiculate); gynophore 0.5–1.5(–3.5) mm. |
Fruiting pedicels | horizontal to divaricate, usually straight, rarely slightly incurved, slender, (2.5–)3–5.5(–6.5) mm, slightly flattened at base. |
erect to erect-ascending, (appressed to rachis at least basally), straight or slightly curved, slender, (1.5–)2–5(–10) mm, not flattened at base. |
Fruits | divaricate to ascending, torulose, straight or slightly incurved, terete, (2–)2.4–5(–6.5) cm × 0.7–1(–1.3) mm; ovules 44–58 per ovary; style usually cylindrical, rarely subclavate, 0.5–1.5(–2) mm. |
divaricate to ascending, torulose, straight or slightly curved, terete, (0.6–)1–2.5(–4.2) cm × 0.7–1(–1.8) mm; ovules 22–50 per ovary; style cylindrical, 0.5–1.5(–2.5) mm. |
Seeds | 0.7–1.5 × 0.5–0.8 mm. |
(flattened), 1–1.5(–1.7) × 0.5–0.7(–1) mm. |
2n | = 26. |
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Thelypodium eucosmum |
Thelypodium crispum |
|
Phenology | Flowering May–Jul. | Flowering Jun–Aug. |
Habitat | Shady slopes and canyons, pinyon-juniper and oak woodland communities, stream beds, streamsides | Alkaline meadows and desert flats, mineralized ground near hot springs, desert shrub communities |
Elevation | 700-1000 m (2300-3300 ft) | 1200-3000(-3200) m (3900-9800(-10500) ft) |
Distribution |
OR
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CA; NV
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Discussion | Of conservation concern. Thelypodium eucosmum is known only from Baker, Grant, and Wheeler counties. It is in the Center for Plant Conservation’s National Collection of Endangered Plants. (Discussion copyrighted by Flora of North America; reprinted with permission.) |
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Source | FNA vol. 7, p. 731. | FNA vol. 7, p. 730. |
Parent taxa | Brassicaceae > tribe Thelypodieae > Thelypodium | Brassicaceae > tribe Thelypodieae > Thelypodium |
Sibling taxa | ||
Synonyms | Thelypodiopsis crispa, T. brachycarpum var. crispum | |
Name authority | B. L. Robinson: in A. Gray et al., Syn. Fl. N. Amer. 1(1,1): 175. (1895) | Greene ex Payson: Ann. Missouri Bot. Gard. 9: 264. (1923) |
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