Lepidium barnebyanum

Reveal

Great Basin Naturalist 27: 178. 1967.

IllustratedEndemicConservation concern
Basionym: Lepidium montanum subsp. demissum C. L. Hitchcock Madroño 10: 157. 1950,
Treatment appears in FNA Volume 7. Treatment on page 576. Mentioned on page 572, 577, 587.

Perennials; (cespitose, caudex thick, woody, numerous-branched, with persistent petiolar remains); puberulent. Stems simple or few from base (caudex), erect to ascending, unbranched or branched distally, (0.3–)0.5–1.5(–1.7) dm. Basal leaves not rosulate; petiole 0.3–0.8 cm, (papery); blade linear, (0.5–)1–7(–8) cm × 10–36 mm, margins entire. Cauline leaves sessile; blade linear, base attenuate, not auriculate, margins entire, (similar to basal, smaller distally). Racemes slightly elongated in fruit; rachis puberulent, trichomes straight. Fruiting pedicels divaricate-ascending, straight, (terete), 3–8 × 0.3–0.4 mm, puberulent throughout. Flowers: sepals (sometimes somewhat persistent), oblong-obovate, 1.8–2.8 × 1.3–1.8 mm; petals white to pale yellow, suborbicular to broadly obovate, 3.2–4.6 × 2.5–3.2 mm, claw 0.5–1.5 mm; stamens 6; filaments 1.8–2.6 mm, (glabrous); anthers 0.5–0.8 mm. Fruits ovate, 4–5.5(–6.2) × 3–3.8 mm, apically winged, apical notch 0–0.2 mm deep; valves thin, smooth, not veined, glabrous; style 0.5–1.2 mm, exserted beyond apical notch. Seeds ovate, 2.2–2.8 × 1.4–1.6 mm.


Phenology: Flowering May–Jun.
Habitat: Pinyon-juniper and sagebrush communities, white sandy shale
Elevation: 1800-2000 m

Discussion

Of conservation concern.

Lepidium barnebyanum is known from the Green River and Uinta Shale Formations in Duchesne County. It is in the Center for Plant Conservation’s National Collection of Endangered Plants.

Selected References

None.

Lower Taxa

None.
... more about "Lepidium barnebyanum"
Ihsan A. Al-Shehbaz +  and John F. Gaskin +
Reveal +
Lepidium montanum subsp. demissum +
1800-2000 m +
Pinyon-juniper and sagebrush communities, white sandy shale +
Flowering May–Jun. +
Great Basin Naturalist +
Illustrated +, Endemic +  and Conservation concern +
Carara +, Cardaria +, Coronopus +, Neolepia +, Physolepidion +, Senebiera +, Sprengeria +  and Stroganowia +
Lepidium barnebyanum +
Lepidium +
species +