Difference between revisions of "Lepidium alyssoides"
Mem. Amer. Acad. Arts, n. s. 4: 10. 1849.
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|name=Lepidium alyssoides var. angustifolium | |name=Lepidium alyssoides var. angustifolium | ||
|authority=(C. L. Hitchcock) Rollins | |authority=(C. L. Hitchcock) Rollins | ||
+ | |rank=variety | ||
}} {{Treatment/ID/Synonym | }} {{Treatment/ID/Synonym | ||
|name=Lepidium alyssoides var. junceum | |name=Lepidium alyssoides var. junceum | ||
|authority=Rollins | |authority=Rollins | ||
+ | |rank=variety | ||
}} {{Treatment/ID/Synonym | }} {{Treatment/ID/Synonym | ||
|name=Lepidium alyssoides var. minus | |name=Lepidium alyssoides var. minus | ||
|authority=Thellung | |authority=Thellung | ||
+ | |rank=variety | ||
}} {{Treatment/ID/Synonym | }} {{Treatment/ID/Synonym | ||
|name=Lepidium alyssoides var. polycarpum | |name=Lepidium alyssoides var. polycarpum | ||
|authority=Thellung | |authority=Thellung | ||
+ | |rank=variety | ||
}} {{Treatment/ID/Synonym | }} {{Treatment/ID/Synonym | ||
|name=Lepidium alyssoides var. streptocarpum | |name=Lepidium alyssoides var. streptocarpum | ||
|authority=Thellung | |authority=Thellung | ||
+ | |rank=variety | ||
}} {{Treatment/ID/Synonym | }} {{Treatment/ID/Synonym | ||
|name=Lepidium montanum subsp. alyssoides | |name=Lepidium montanum subsp. alyssoides | ||
|authority=(A. Gray) C. L. Hitchcock | |authority=(A. Gray) C. L. Hitchcock | ||
+ | |rank=subspecies | ||
}} {{Treatment/ID/Synonym | }} {{Treatment/ID/Synonym | ||
|name=Lepidium montanum var. alyssoides | |name=Lepidium montanum var. alyssoides | ||
|authority=(A. Gray) M. E. Jones | |authority=(A. Gray) M. E. Jones | ||
+ | |rank=variety | ||
}} {{Treatment/ID/Synonym | }} {{Treatment/ID/Synonym | ||
|name=Lepidium montanum subsp. angustifolium | |name=Lepidium montanum subsp. angustifolium | ||
|authority=(C. L. Hitchcock) C. L. Hitchcock | |authority=(C. L. Hitchcock) C. L. Hitchcock | ||
+ | |rank=subspecies | ||
}} {{Treatment/ID/Synonym | }} {{Treatment/ID/Synonym | ||
|name=Lepidium montanum var. angustifolium | |name=Lepidium montanum var. angustifolium | ||
|authority=C. L. Hitchcock | |authority=C. L. Hitchcock | ||
+ | |rank=variety | ||
}} {{Treatment/ID/Synonym | }} {{Treatment/ID/Synonym | ||
|name=Lepidium tortum | |name=Lepidium tortum | ||
− | |authority= | + | |authority= |
+ | |rank=species | ||
}} | }} | ||
|hierarchy=Brassicaceae;Brassicaceae tribe Lepidieae;Lepidium;Lepidium alyssoides | |hierarchy=Brassicaceae;Brassicaceae tribe Lepidieae;Lepidium;Lepidium alyssoides | ||
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|elevation=1200-2800 m | |elevation=1200-2800 m | ||
|distribution=Ariz.;Colo.;Nev.;N.Mex.;Tex.;Utah;Wyo.;Mexico (Chihuahua;Coahuila;Nuevo León;San Luis Potosí). | |distribution=Ariz.;Colo.;Nev.;N.Mex.;Tex.;Utah;Wyo.;Mexico (Chihuahua;Coahuila;Nuevo León;San Luis Potosí). | ||
− | |discussion=<p>Of the five varieties of <i>Lepidium alyssoides</i> recognized by R. C. Rollins (1993), one (< | + | |discussion=<p>Of the five varieties of <i>Lepidium alyssoides</i> recognized by R. C. Rollins (1993), one (<i></i>var.<i> mexicanum</i> 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 (<i></i>var.<i> eastwoodiae</i>) is treated below as a distinct species, and the fourth (var. angustifolium) is included here within <i>L. alyssoides</i>.</p> |
|tables= | |tables= | ||
|references= | |references= | ||
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-->{{#Taxon: | -->{{#Taxon: | ||
name=Lepidium alyssoides | name=Lepidium alyssoides | ||
− | |||
|authority=A. Gray | |authority=A. Gray | ||
|rank=species | |rank=species | ||
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|publication year=1849 | |publication year=1849 | ||
|special status= | |special status= | ||
− | |source xml=https:// | + | |source xml=https://bitbucket.org/aafc-mbb/fna-data-curation/src/2e0870ddd59836b60bcf96646a41e87ea5a5943a/coarse_grained_fna_xml/V7/V7_924.xml |
|tribe=Brassicaceae tribe Lepidieae | |tribe=Brassicaceae tribe Lepidieae | ||
|genus=Lepidium | |genus=Lepidium |
Latest revision as of 23:37, 5 November 2020
Perennials or subshrubs; (woody base often aboveground); glabrous or minutely puberulent. Stems few to several from base, erect to ascending, branched throughout, (0.7–)1–4.8(–6.1) dm. Basal leaves 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. Cauline leaves sessile; blade linear, (0.8–)1.3–7(–9.5) cm × (0.7–)1–2(–3) mm, base attenuate, not auriculate, margins entire. Racemes elongated in fruit; rachis puberulent or glabrous. Fruiting pedicels divaricate to horizontal, straight or recurved to somewhat sigmoid, (terete), 3.5–8(–11) × 0.2 mm, glabrous or puberulent adaxially. Flowers: 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. Fruits 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. Seeds ovate, 1.5–1.8(–2) × 0.9–1.2(–1.5) mm. 2n = 32.
Phenology: Flowering May–Jul.
Habitat: Pinyon-juniper or sagebrush communities, prairies, grasslands, sandstone outcrops, gypsum flats, sand dunes, dry flats and river bottoms, gravelly roadsides
Elevation: 1200-2800 m
Distribution
![V7 924-distribution-map.gif](/w/images/5/5e/V7_924-distribution-map.gif)
Ariz., Colo., Nev., N.Mex., Tex., Utah, Wyo., Mexico (Chihuahua, Coahuila, Nuevo León, San Luis Potosí).
Discussion
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.
Selected References
None.