Difference between revisions of "Lepidium austrinum"
Fl. S.E. U.S., 468, 1331. 1903.
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|place=468, 1331. 1903 | |place=468, 1331. 1903 | ||
|year=1903 | |year=1903 | ||
+ | }} | ||
+ | |special_status={{Treatment/ID/Special_status | ||
+ | |code=W | ||
+ | |label=Weedy | ||
+ | }}{{Treatment/ID/Special_status | ||
+ | |code=F | ||
+ | |label=Illustrated | ||
}} | }} | ||
|basionyms= | |basionyms= | ||
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|name=Lepidium austrinum var. orbiculare | |name=Lepidium austrinum var. orbiculare | ||
|authority=Thellung | |authority=Thellung | ||
+ | |rank=variety | ||
}} {{Treatment/ID/Synonym | }} {{Treatment/ID/Synonym | ||
|name=Lepidium lasiocarpum var. orbiculare | |name=Lepidium lasiocarpum var. orbiculare | ||
|authority=(Thellung) C. L. Hitchcock | |authority=(Thellung) C. L. Hitchcock | ||
+ | |rank=variety | ||
}} | }} | ||
|hierarchy=Brassicaceae;Brassicaceae tribe Lepidieae;Lepidium;Lepidium austrinum | |hierarchy=Brassicaceae;Brassicaceae tribe Lepidieae;Lepidium;Lepidium austrinum | ||
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-->{{#Taxon: | -->{{#Taxon: | ||
name=Lepidium austrinum | name=Lepidium austrinum | ||
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|authority=Small | |authority=Small | ||
|rank=species | |rank=species | ||
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|publication title=Fl. S.E. U.S., | |publication title=Fl. S.E. U.S., | ||
|publication year=1903 | |publication year=1903 | ||
− | |special status= | + | |special status=Weedy;Illustrated |
− | |source xml=https:// | + | |source xml=https://bitbucket.org/aafc-mbb/fna-data-curation/src/2e0870ddd59836b60bcf96646a41e87ea5a5943a/coarse_grained_fna_xml/V7/V7_926.xml |
|tribe=Brassicaceae tribe Lepidieae | |tribe=Brassicaceae tribe Lepidieae | ||
|genus=Lepidium | |genus=Lepidium |
Latest revision as of 23:37, 5 November 2020
Annuals or biennials; often densely hirsute, (trichomes cylindrical). Stems often simple from base, erect, branched distally, (1.5–)2–6.7(–9.4) dm. Basal leaves (later withered); rosulate; petiole (0.7–)1.5–4.5 cm; blade pinnatifid, 2–8.3 cm × 9–26 mm, margins (of lobes) entire or dentate. Cauline leaves shortly petiolate; blade oblanceolate to nearly linear, 1–4.5(–6.2) cm × 3–10(–17) mm, base attenuate to cuneate, not auriculate, margins entire or dentate. Racemes much-elongated in fruit; rachis pubescent, trichomes curved, with fewer and longer, straight ones. Fruiting pedicels usually divaricate, rarely horizontal, straight or slightly recurved, (terete), (2.5–)3–4.1(–4.7) × 0.2 mm, puberulent adaxially. Flowers: sepals oblong, 0.8–1 × 0.2–0.4 mm; petals (sometimes absent), white, oblanceolate, 0.4–1.6 × 0.1–0.8 mm, claw absent; stamens 2, median; filaments 0.8–1 mm; anthers 0.1–0.2 mm. Fruits elliptic-obovate to obovate-orbicular, 2.4–3.2 × 1.8–2.5 mm, apically winged, apical notch 0.2–0.5 mm deep; valves thin, smooth, not veined, sparsely puberulent, (trichomes often antrorsely appressed, sometimes restricted to margin); style 0.05–0.1 mm, included in apical notch. Seeds ovate, 1.4–1.6 × 0.7–0.9 mm.
Phenology: Flowering Mar–Jun.
Habitat: Disturbed grounds, railroad tracks and embankments, fields, knolls, stream banks, waste areas, open banks, roadsides, sandy terraces
Distribution
Kans., La., Miss., N.Mex., Okla., Tex., Mexico (Coahuila, Nuevo León, San Luis Potosí).
Discussion
Selected References
None.