Thelypodium brachycarpum |
Thelypodium repandum |
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short-pod thelypodium, short-pod thelypody |
wavyleaf thelypody |
|
Habit | Biennials; often glaucous, glabrous or pubescent. | Biennials or perennials; (short-lived); distinctly glaucous throughout, glabrous. |
Stems | branched, (1.3–)3.4–8.3(–12) dm, (somewhat glaucous, glabrous throughout or pubescent proximally). |
usually branched distally, 1–4.4(–6) dm. |
Basal leaves | petiole (1.5–)2–5.2(–9) cm, glabrous or pubescent; blade usually oblanceolate to spatulate, rarely obovate or lanceolate, 3.3–14(–20) cm × (05–)10–32(–47) mm, margins often pinnately lobed to lyrate, sometimes dentate or entire. |
(and proximal cauline): petiole 1–4(–6) cm; blade (fleshy), usually ovate or obovate, rarely orbicular or spatulate, (2.2–)4–10.5(–14) cm × (10–)15–43(–55) mm, margins usually lyrate, sinuate and repand, or dentate, rarely entire. |
Cauline leaves | sessile; blade linear to lanceolate, smaller distally, (base sagittate, appressed to stem), margins usually entire, rarely dentate. |
shortly petiolate; blade lanceolate or elliptic, much smaller than basal, margins entire or repand. |
Racemes | dense, slightly elongated in fruit, (flower buds oblong). |
somewhat lax, slightly elongated in fruit. |
Flowers | sepals erect, lanceolate to linear-lanceolate or ovate, (3–)3.5–5(–5.5) × 1–1.5(–2) mm; petals white, linear to narrowly oblanceolate, 8–12.5(–16) × 0.3–0.5(–1) mm, margins strongly crisped, claw differentiated from blade, (slender, 2.5–4 mm, narrowest at base); nectar glands surrounding bases of lateral stamens, median glands absent; filaments subequal or slightly tetradynamous, 2.5–6.5(–10) mm; anthers exserted, linear, 1.5.–2(–2.5) mm, slightly circinately coiled, (apiculate); gynophore (0.5–)1–2(–5) mm. |
sepals spreading to reflexed, oblong, (2.5–)3–4 × (0.8–)1–1.5(–1.8) mm; petals purple or lavender, usually oblanceolate, rarely spatulate, (2.5–)3–4.5 × 0.5–1 mm, margins not crisped, claw differentiated from blade; nectar glands confluent; filaments subequal, 2.5–3.8 mm; anthers oblong, 1–1.8 mm; gynophore 0.5–0.8(–1) mm. |
Fruiting pedicels | horizontal to divaricate, straight or slightly curved, stout, 1–2(–2.5) mm, flattened at base. |
divaricate to divaricate-ascending, straight or incurved, slender, 4–12(–15) mm, slightly flattened at base. |
Fruits | divaricate to ascending, torulose, often straight, sometimes slightly curved, terete, (0.8–)1.2–2.7(–3) cm × 1–1.5(–2) mm; ovules 12–26 per ovary; style cylindrical, (0.2–)0.5–1(–2.5) mm. |
usually erect to ascending, rarely divaricate, torulose, straight or, sometimes, incurved, flattened, (2–)4–7.4 cm × 1–1.5(–1.8) mm, (replum not constricted between seeds); ovules 32–44 per ovary; style subclavate, 0.5–1.2(–1.5) mm. |
Seeds | (plump), (1.3–)1.5–2 × 0.8–1(–1.3) mm. |
(0.7–)1–1.5 × 0.5–0.8 mm. |
Thelypodium brachycarpum |
Thelypodium repandum |
|
Phenology | Flowering Apr–Aug. | Flowering Jun. |
Habitat | Strongly alkaline meadows and desert flats | Decomposing shale banks |
Elevation | 600-2300 m (2000-7500 ft) | ca. 1700 m (ca. 5600 ft) |
Distribution |
CA; OR
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ID |
Discussion | Thelypodium brachycarpum is known in California from Napa, Shasta, and Siskiyou counties and in Oregon from Klamath County. (Discussion copyrighted by Flora of North America; reprinted with permission.) |
Thelypodium repandum is known from the shale banks of the Salmon River and its tributaries in Custer County. (Discussion copyrighted by Flora of North America; reprinted with permission.) |
Source | FNA vol. 7, p. 730. | FNA vol. 7, p. 736. |
Parent taxa | Brassicaceae > tribe Thelypodieae > Thelypodium | Brassicaceae > tribe Thelypodieae > Thelypodium |
Sibling taxa | ||
Synonyms | Thelypodiopsis brachycarpa, Thelypodiopsis brachypoda | |
Name authority | Torrey: in C. Wilkes et al., U.S. Expl. Exped. 17(2): 231, plate 1. (1874) | Rollins: Contr. Dudley Herb. 3: 371. (1946) |
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