Thelypodium laciniatum |
Thelypodium repandum |
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cut-leaf thelypody, feathery thelypodium, many-flower thelypody, thick-leaf thelypody, thick-leaf thelypody (var. laciniatum), western thelypodium |
wavyleaf thelypody |
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Habit | Biennials; somewhat glaucous, glabrous throughout. | Biennials or perennials; (short-lived); distinctly glaucous throughout, glabrous. |
Stems | branched proximally and/or distally, (1.3–)2.6–10(–14.5) dm. |
usually branched distally, 1–4.4(–6) dm. |
Basal leaves | (and proximal cauline): petiole (1–)1.5–10(–15) cm; blade lanceolate to deltate-lanceolate, or oblong to ovate (lateral lobes oblong to ovate), (4.3–)6.8–24(–45) cm × (10–)18–85(–140) mm, margins pinnately lobed or laciniate (lobes sinuate, laciniate, or dentate). |
(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 | petiolate; blade lanceolate to linear-lanceolate, similar to basal, smaller distally, margins entire or sinuate to laciniate. |
shortly petiolate; blade lanceolate or elliptic, much smaller than basal, margins entire or repand. |
Racemes | dense, slightly elongated in fruit (to 9.5 dm, flower buds narrowly oblong). |
somewhat lax, slightly elongated in fruit. |
Flowers | sepals erect, oblong to linear-oblong, (3.5–)4–7.5(–9.5) × (0.8–)1–2(–2.5) mm; petals white or purple, often linear, sometimes linear-lanceolate, (6–)8.5–18(–20) × 0.3–0.8(–1.5) mm, margins slightly crisped, claw strongly differentiated from blade, [(2.5–)3–6(–7) mm, widest at base]; nectar glands confluent, lateral and median; filaments subequal, (4.5–)6.5–12(–15) mm; anthers exserted, linear, 2–4(–5.5) mm, circinately coiled, (apiculate); gynophore (0.5–)1–5(–8.5) 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, rarely, divaricate, straight, often stout, (2–)3–6.5(–15) mm, often flattened at base. |
divaricate to divaricate-ascending, straight or incurved, slender, 4–12(–15) mm, slightly flattened at base. |
Fruits | divaricate-ascending to slightly reflexed, torulose, somewhat tortuous, terete, (2.5–)3.5–10(–12) cm × (0.7–)1–1.5(–2) mm; ovules 56–108 per ovary; style usually cylindrical, rarely subclavate, (0.3–)0.7–2.5(–4) 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 | (0.7–)1–1.5(–1.8) × 0.5–0.7(–1) mm. |
(0.7–)1–1.5 × 0.5–0.8 mm. |
2n | = 26. |
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Thelypodium laciniatum |
Thelypodium repandum |
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Phenology | Flowering Apr–Aug. | Flowering Jun. |
Habitat | Rock crevices, cliffs, rocky outcrops, among boulders, serpentine rock, talus, canyon walls, limestone ledges | Decomposing shale banks |
Elevation | 0-2400 m (0-7900 ft) | ca. 1700 m (ca. 5600 ft) |
Distribution |
CA; ID; NV; OR; WA; BC
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ID |
Discussion | 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.) |
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Source | FNA vol. 7, p. 734. | FNA vol. 7, p. 736. |
Parent taxa | Brassicaceae > tribe Thelypodieae > Thelypodium | Brassicaceae > tribe Thelypodieae > Thelypodium |
Sibling taxa | ||
Synonyms | Macropodium laciniatum, Pachypodium laciniatum, T. laciniatum var. streptanthoides, T. leptosepalum, T. streptanthoides | |
Name authority | (Hooker) Endlicher: in W. G. Walpers, Repert. Bot. Syst. 1: 172. (1842) | Rollins: Contr. Dudley Herb. 3: 371. (1946) |
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