Thelypodium laciniatum |
Thelypodium flexuosum |
|
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cut-leaf thelypody, feathery thelypodium, many-flower thelypody, thick-leaf thelypody, thick-leaf thelypody (var. laciniatum), western thelypodium |
nodding thelypodium, nodding thelypody, spreading thelypodium, spreading thelypody, zigzag thelypody |
|
Habit | Biennials; somewhat glaucous, glabrous throughout. | Perennials; (caudex woody, covered with persistent petiolar remains); somewhat glaucous, glabrous throughout. |
Stems | branched proximally and/or distally, (1.3–)2.6–10(–14.5) dm. |
(often subdecumbent), branched basally, (flexuous), 1.5–5.6(–8.5) 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). |
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 | petiolate; blade lanceolate to linear-lanceolate, similar to basal, smaller distally, margins entire or sinuate to laciniate. |
(ascending); sessile; blade lanceolate to linear, 1–7(–11) cm × 2–7(–14) mm, (base sagittate to somewhat amplexicaul), margins entire. |
Racemes | dense, slightly elongated in fruit (to 9.5 dm, flower buds narrowly oblong). |
(few-flowered, corymbose), elongated in fruit, (flower buds oblong). |
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 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. |
Fruiting pedicels | horizontal to, rarely, divaricate, straight, often stout, (2–)3–6.5(–15) mm, often flattened at base. |
usually horizontal to divaricate, rarely divaricate-ascending, straight or slightly curved upward, slender, (2.5–)4–9(–16) 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. |
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 | (0.7–)1–1.5(–1.8) × 0.5–0.7(–1) mm. |
(1–)1.3–1.5 × 0.5–8(–1) mm. |
2n | = 26. |
= 26. |
Thelypodium laciniatum |
Thelypodium flexuosum |
|
Phenology | Flowering Apr–Aug. | Flowering Apr–Jun. |
Habitat | Rock crevices, cliffs, rocky outcrops, among boulders, serpentine rock, talus, canyon walls, limestone ledges | Often tangled among woody shrubs in moderately to strongly alkaline sandy loam or clay, open deserts |
Elevation | 0-2400 m (0-7900 ft) | 1000-2400 m (3300-7900 ft) |
Distribution |
CA; ID; NV; OR; WA; BC
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CA; ID; NV; OR
|
Source | FNA vol. 7, p. 734. | FNA vol. 7, p. 731. |
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) | B. L. Robinson: in A. Gray et al., Syn. Fl. N. Amer. 1(1,1): 175. (1895) |
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