familyBrassicaceae
genusArabidopsis
speciesArabidopsis lyrata
subspeciesArabidopsis lyrata subsp. petraea
Difference between revisions of "Arabidopsis lyrata subsp. petraea"
Novon 7: 326. 1997.
Basionym: Cardamine petraea Linnaeus Sp. Pl. 2: 654. 1753
Synonyms: Arabis media N. Busch
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Revision as of 22:55, 16 December 2019
Perennials; caudex well-developed, often branched, somewhat thickened. Basal leaves: blade margins entire or toothed, without distinct terminal lobes. Petals 4–6 mm. Fruits 1.2–1.8 mm wide; style 0–0.5 mm. 2n = 16, 32.
Phenology: Flowering Jun–Jul.
Habitat: Sand dunes, sand bars, tussocks, gravel, tundra, volcanic ash, stream terraces
Elevation: 0 m
Distribution
Yukon, Alaska, n Europe, n, e Asia.
Discussion
The occurrence of subsp. petraea in North America was pointed out by S. L. O’Kane and I. A. Al-Shehbaz (1997) and Al-Shehbaz and O’Kane (www.aspb.org/publications/arabidopsis, 2002); no specimens were cited. G. A. Mulligan (1996), who treated the taxon as Arabis media, did not cite specimens either. Representative Alaskan collections were examined, including Parker 7995 (MO) and Hardy 134 (CAS, MO).
Selected References
None.
Lower Taxa
None.