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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
from FNA
CA; ID; NV; OR; WA; BC
[WildflowerSearch map]
[BONAP county map]
from FNA
CA; ID; NV; OR
[WildflowerSearch map]
[BONAP county map]
Source FNA vol. 7, p. 734. FNA vol. 7, p. 731.
Parent taxa Brassicaceae > tribe Thelypodieae > Thelypodium Brassicaceae > tribe Thelypodieae > Thelypodium
Sibling taxa
T. brachycarpum, T. crispum, T. eucosmum, T. flexuosum, T. howellii, T. integrifolium, T. laxiflorum, T. milleflorum, T. paniculatum, T. repandum, T. rollinsii, T. sagittatum, T. stenopetalum, T. texanum, T. wrightii
T. brachycarpum, T. crispum, T. eucosmum, T. howellii, T. integrifolium, T. laciniatum, T. laxiflorum, T. milleflorum, T. paniculatum, T. repandum, T. rollinsii, T. sagittatum, T. stenopetalum, T. texanum, T. wrightii
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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