Difference between revisions of "Alyssum obovatum"
Bull. Soc. Imp. Naturalistes Moscou 10: 57. 1837.
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| − | |basionyms={{Treatment/ID/ | + | |basionyms={{Treatment/ID/Basionym |
|name=Odontarrhena obovata | |name=Odontarrhena obovata | ||
|authority=C. A. Meyer | |authority=C. A. Meyer | ||
| + | |rank=species | ||
| + | |publication_title=in C. F. von Ledebour, Fl. Altaica | ||
| + | |publication_place=3: 61. 1831 | ||
}} | }} | ||
|synonyms={{Treatment/ID/Synonym | |synonyms={{Treatment/ID/Synonym | ||
|name=Alyssum americanum | |name=Alyssum americanum | ||
|authority=Greene | |authority=Greene | ||
| − | }}{{Treatment/ID/Synonym | + | |rank=species |
| + | }} {{Treatment/ID/Synonym | ||
|name=Alyssum biovulatum | |name=Alyssum biovulatum | ||
|authority=N. Busch | |authority=N. Busch | ||
| − | }}{{Treatment/ID/Synonym | + | |rank=species |
| + | }} {{Treatment/ID/Synonym | ||
|name=Alyssum fallax | |name=Alyssum fallax | ||
|authority=Nyárády | |authority=Nyárády | ||
| + | |rank=species | ||
}} | }} | ||
|hierarchy=Brassicaceae;Brassicaceae tribe Alysseae;Alyssum;Alyssum obovatum | |hierarchy=Brassicaceae;Brassicaceae tribe Alysseae;Alyssum;Alyssum obovatum | ||
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name=Alyssum obovatum | name=Alyssum obovatum | ||
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|authority=(C. A. Meyer) Turczaninow | |authority=(C. A. Meyer) Turczaninow | ||
|rank=species | |rank=species | ||
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|publication year=1837 | |publication year=1837 | ||
|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_323.xml |
|tribe=Brassicaceae tribe Alysseae | |tribe=Brassicaceae tribe Alysseae | ||
|genus=Alyssum | |genus=Alyssum | ||
Latest revision as of 22:32, 5 November 2020
Perennials; (cespitose, caudex often woody); canescent throughout, trichomes 10–25-rayed. Stems often several from base (often with sterile shoots), usually erect or ascending, 0.7–1.5(–2) dm. Cauline leaves subsessile; blade broadly oblanceolate, obovate-spatulate, or obovate, 0.6–1.4(–1.7) cm × (1–)2–6 mm (gradually smaller distally), base attenuate, apex rounded, obtuse, or subacute. (Racemes corymbose, simple, or in panicles terminating each stem.) Fruiting pedicels divaricate, straight, slender, (2–)3–7(–9) mm, trichomes uniformly stellate. Flowers: sepals oblong, 1.5–2 × 0.7–1 mm, stellate-pubescent; petals yellow, broadly spatulate, 2.5–3.5(–4) × 1–1.5 mm, base attenuate, apex often obtuse or rounded, glabrous abaxially; filaments: median pairs unilaterally broadly winged, apically 1-toothed, lateral pair with lanceolate or narrowly oblong basal appendage, apically obtuse or subacute, 1.5–2 mm; anthers oblong, 0.3–0.4 mm. Fruits broadly elliptic or obovate, 3–4.5(–5) × 2.5–3.5 mm, apex obtuse to rounded; valves inflated at middle or on 1 side, flattened at margins, densely stellate-pubescent; ovules (1 or) 2 per ovary; style (slender), 1.5–2 mm, glabrous. Seeds ovoid, compressed, 1–1.7 × 0.8–1.2 mm, not winged or margined. 2n = 16, 32.
Phenology: Flowering May–Jul.
Habitat: Mountain slopes, cliffs, gravel, rocky places
Elevation: 500-1500 m
Distribution
Yukon, Alaska, c, e Asia.
Discussion
Selected References
None.