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cut-leaf thelypody, feathery thelypodium, many-flower thelypody, thick-leaf thelypody, thick-leaf thelypody (var. laciniatum), western thelypodium

wavyleaf thelypody

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.

Thelypodium laciniatum

Thelypodium repandum

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
from FNA
CA; ID; NV; OR; WA; BC
[WildflowerSearch map]
[BONAP county map]
from FNA
ID
[BONAP county map]
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.)

Source FNA vol. 7, p. 734. FNA vol. 7, p. 736.
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. flexuosum, T. howellii, T. integrifolium, T. laciniatum, T. laxiflorum, T. milleflorum, T. paniculatum, 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) Rollins: Contr. Dudley Herb. 3: 371. (1946)
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