Lepidium alyssoides
Lepidium jaredii
mesa pepperwort
Jared's pepper grass, Jared's pepperweed
few to several from base, erect to ascending, branched throughout, (0.7–)1–4.8(–6.1) dm.
simple or several from base, erect to ascending, branched distally, 1–6(–7) dm.
often not rosulate;
petiole 1–6 cm;
blade pinnately lobed, (1–)1.5–8(–11) cm × (5–)10–35 mm, margins (of lobes) entire or denticulate.
(withered by anthesis);
not rosulate.
sessile;
blade linear, (0.8–)1.3–7(–9.5) cm × (0.7–)1–2(–3) mm, base attenuate, not auriculate, margins entire.
sessile;
blade lanceolate to linear, 2–7.5(–10) cm × 2–10 mm, base cuneate to attenuate, not auriculate, margins entire or sparsely dentate subapically.
elongated in fruit;
rachis puberulent or glabrous.
considerably elongated in fruit, (lax);
rachis usually pilose, rarely glabrous, trichomes usually curved, cylindrical.
sepals ovate to oblong, 1–2 × 0.8–1 mm;
petals white, suborbicular, 2–3 × 1–2 mm, claw 0.5–1.5 mm;
stamens 6;
filaments 1.5–2 mm, (glabrous);
anthers 0.2–0.4 mm.
sepals oblong, 1.8–2.5 × 0.9–1.5 mm;
petals lemon yellow (fading whitish), spatulate, 2.8–4 × 1.2–1.8 mm, claw 1–1.4 mm;
stamens 6;
filaments 1.8–2.5 mm, (glabrous);
anthers 0.5–0.6 mm.
divaricate to horizontal, straight or recurved to somewhat sigmoid, (terete), 3.5–8(–11) × 0.2 mm, glabrous or puberulent adaxially.
divaricate to horizontal, straight or slightly sigmoid, (terete), 5–15 × 0.15–0.2 mm, pilose adaxially.
broadly ovate, 2–3.7(–4.3) × (1.5–)1.8–2.9(–3.4) mm, apically winged, apical notch 0.1–0.3(–0.4) mm deep;
valves thin, smooth, not veined, glabrous;
style 0.2–0.6 mm, exserted beyond apical notch.
broadly ovate, 3–3.8(–4) × 2.8–3.2(–3.5) mm, apically not winged, apical notch 0(–0.1) mm deep;
valves thin, obscurely veined, smooth or minutely papillate, glabrous;
style 0.3–0.8(–1) mm, exserted beyond apical notch.
ovate, 1.5–1.8(–2) × 0.9–1.2(–1.5) mm.
(reddish brown), oblong, 1.8–2.2 × 1–1.4 mm.
= 32.
= 16.
Lepidium alyssoides
Lepidium jaredii
Of the five varieties of Lepidium alyssoides recognized by R. C. Rollins (1993), one (var. mexicanum Rollins) is a short-tufted form of the species restricted to Mexico that does not seem to merit recognition, another (var. junceum) is a glabrescent form of the type variety, a third (var. eastwoodiae) is treated below as a distinct species, and the fourth (var. angustifolium) is included here within L. alyssoides.
(Discussion copyrighted by Flora of North America; reprinted with permission.)
Of conservation concern.
Lepidium jaredii is known from Fresno, San Benito, and San Luis Obispo counties.
(Discussion copyrighted by Flora of North America; reprinted with permission.)
CalFlora
WildflowerSearch
iNaturalist
USDA Plants Database
