Difference between revisions of "Arabidopsis arenicola"
Canad. J. Bot. 84: 279. 2006.
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| − | |basionyms={{Treatment/ID/ | + | |basionyms={{Treatment/ID/Basionym |
|name=Eutrema arenicola | |name=Eutrema arenicola | ||
|authority=Richardson ex Hooker | |authority=Richardson ex Hooker | ||
| + | |rank=species | ||
| + | |publication_title=Fl. Bor.-Amer. | ||
| + | |publication_place=1: 67, plate 24. 1830 | ||
}} | }} | ||
|synonyms={{Treatment/ID/Synonym | |synonyms={{Treatment/ID/Synonym | ||
|name=Arabis arenicola | |name=Arabis arenicola | ||
|authority=(Richardson ex Hooker) Gelert | |authority=(Richardson ex Hooker) Gelert | ||
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}} {{Treatment/ID/Synonym | }} {{Treatment/ID/Synonym | ||
|name=Arabis arenicola var. pubescens | |name=Arabis arenicola var. pubescens | ||
|authority=(S. Watson) Gelert | |authority=(S. Watson) Gelert | ||
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}} {{Treatment/ID/Synonym | }} {{Treatment/ID/Synonym | ||
|name=Arabis humifusa | |name=Arabis humifusa | ||
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|name=Arabis humifusa var. pubescens | |name=Arabis humifusa var. pubescens | ||
|authority=S. Watson | |authority=S. Watson | ||
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|hierarchy=Brassicaceae;Brassicaceae tribe Camelineae;Arabidopsis;Arabidopsis arenicola | |hierarchy=Brassicaceae;Brassicaceae tribe Camelineae;Arabidopsis;Arabidopsis arenicola | ||
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name=Arabidopsis arenicola | name=Arabidopsis arenicola | ||
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|authority=(Richardson ex Hooker) Al-Shehbaz | |authority=(Richardson ex Hooker) Al-Shehbaz | ||
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|special status= | |special status= | ||
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|tribe=Brassicaceae tribe Camelineae | |tribe=Brassicaceae tribe Camelineae | ||
|genus=Arabidopsis | |genus=Arabidopsis | ||
Latest revision as of 23:35, 5 November 2020
Perennials; (caudex usually branched, rarely simple, with persistent petiolar remains); glabrous throughout or sparsely to moderately pubescent, trichomes simple and short-stalked, forked, (to 0.5 mm). Stems often several from base (caudex), erect, ascending, or decumbent, unbranched or branched (few) distally, 0.5–2(–3) dm, glabrous or sparsely pubescent distally. Basal leaves: petiole 0.5–2 cm, (ciliate or glabrous); blade (fleshy), oblanceolate to spatulate, 0.5–2 cm × 2–6 mm, margins entire or dentate, (not ciliate), apex obtuse or acute, surfaces pubescent or glabrous. Cauline leaves [(1–)2–4(–6)] sessile; blade oblong to oblanceolate, 0.7–1.8(–2.5) cm × 2–5 mm, (base not auriculate), margins usually entire, rarely dentate, (apex obtuse or acute, surfaces glabrous or sparsely pubescent). Fruiting pedicels ascending to divaricate, 5–10(–12) mm, (glabrous). Flowers: sepals 1.7–3 mm, lateral pair not saccate basally; petals white, usually oblanceolate, rarely spatulate, 4–5 × 1–2 mm; filaments 1.7–3 mm. Fruits (suberect to divaricate), straight, smooth, terete or slightly flattened, (0.8–)1–2(–2.8) cm × 1.5–2.2(–2.5) mm; valves each with obscure midvein; ovules 30–54 per ovary; style 0.4–0.8 mm. Seeds (sometimes sub-biseriate), reddish brown, narrowly oblong, 0.9–1.1 mm, pointed distally; cotyledons incumbent. 2n = 32.
Phenology: Flowering Jun–Aug.
Habitat: Sandy beaches, gravel, flats of streambeds
Elevation: 0-1500 m
Distribution
Greenland, Man., Nfld. and Labr. (Labr.), Nunavut, Ont., Que., Sask.
Discussion
Selected References
None.