Thelypodium integrifolium |
Thelypodium eucosmum |
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entire leaf thelypodium, entire-leaf thelypody |
arrow-leaf thelypody, world thelypody |
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Habit | Biennials; somewhat glaucous throughout, glabrous. | Biennials or perennials; (short-lived); glaucous, glabrous (except petioles). | ||||||||||||||||
Stems | paniculately branched distally, (2–)4.5–17(–28) dm. |
branched distally, 2–10 dm. |
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Basal leaves | petiole (0.5–)1.2–10(–15) cm; blade usually oblong to lanceolate, or oblanceolate to spatulate, rarely ovate or obovate, (3.7–)5–31(–54) cm × (12–)16–78(–140) mm, margins usually entire, rarely dentate or repand. |
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. |
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Cauline leaves | (ascending, not appressed to stem); sessile; blade linear to linear-lanceolate, (1–)2.2–8.3(–19.5) cm × (2–)3–11(–25) mm, (base cuneate to attenuate, not auriculate), margins entire. |
(ascending); sessile; blade lanceolate to oblong, 1.8–4.5(–6) cm × 5–16(–24) mm, (base amplexicaul to strongly auriculate), margins entire. |
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Racemes | dense, slightly or considerably elongated in fruit, (flower buds narrowly oblong). |
lax, slightly elongated in fruit, (flower buds oblong-linear). |
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Flowers | sepals erect, linear to linear-oblong, (3–)3.5–5.5(–7.5) × (0.5–)0.8–1(–1.5) mm; petals white or lavender to purple, spatulate to oblanceolate, (4.5–)6–9(–13) × (0.5–)0.8–1.5(–2.3) mm, margins not crisped, claw differentiated from blade, [slender, (2–)3–4.5(–7) mm, narrowest at base]; nectar glands lateral, flat or toothlike, median glands absent; filaments subequal to slightly tetradynamous, (3–)4.5–7.5(–12.5) mm; anthers exserted, linear to narrowly oblong, (1–)1.5–2.5(–4.5) mm, not circinately coiled; gynophore 0.5–2(–5.5) mm. |
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. |
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Fruiting pedicels | usually horizontal to divaricate, rarely ascending or reflexed, usually straight, rarely incurved, slender or stout, (2–)3–9(–13) mm, often strongly flattened, rarely not flattened at base. |
horizontal to divaricate, usually straight, rarely slightly incurved, slender, (2.5–)3–5.5(–6.5) mm, slightly flattened at base. |
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Fruits | usually horizontal to divaricate-ascending, or ascending, rarely reflexed, usually torulose, rarely submoniliform, usually strongly incurved, sometimes straight, rarely arcuate, terete, (0.8–)1.4–6.5(–8) cm × 1–1.3(–2) mm; ovules 14–40 per ovary; style usually cylindrical, rarely subclavate, 0.5–1.3(–3.2) mm. |
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. |
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Seeds | (1–)1.2–2(–2.3) × 0.7–1(–1.3) mm. |
0.7–1.5 × 0.5–0.8 mm. |
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Thelypodium integrifolium |
Thelypodium eucosmum |
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Phenology | Flowering May–Jul. | |||||||||||||||||
Habitat | Shady slopes and canyons, pinyon-juniper and oak woodland communities, stream beds, streamsides | |||||||||||||||||
Elevation | 700-1000 m (2300-3300 ft) | |||||||||||||||||
Distribution |
AZ; CA; CO; ID; MT; ND; NE; NM; NV; OR; SD; UT; WA; WY
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OR
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Discussion | Subspecies 5 (5 in the flora). (Discussion copyrighted by Flora of North America; reprinted with permission.) |
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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Key |
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Source | FNA vol. 7, p. 732. | FNA vol. 7, p. 731. | ||||||||||||||||
Parent taxa | Brassicaceae > tribe Thelypodieae > Thelypodium | Brassicaceae > tribe Thelypodieae > Thelypodium | ||||||||||||||||
Sibling taxa | ||||||||||||||||||
Subordinate taxa | ||||||||||||||||||
Synonyms | Pachypodium integrifolium, Pleurophragma integrifolium | |||||||||||||||||
Name authority | (Nuttall) Endlicher: in W. G. Walpers, Repert. Bot. Syst. 1: 172. (1842) | B. L. Robinson: in A. Gray et al., Syn. Fl. N. Amer. 1(1,1): 175. (1895) | ||||||||||||||||
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