Difference between revisions of "Arabis pycnocarpa var. pycnocarpa"
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|accepted_name=Arabis pycnocarpa var. pycnocarpa | |accepted_name=Arabis pycnocarpa var. pycnocarpa | ||
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|name=Arabis hirsuta var. minshallii | |name=Arabis hirsuta var. minshallii | ||
|authority=M. Hopkins | |authority=M. Hopkins | ||
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}} {{Treatment/ID/Synonym | }} {{Treatment/ID/Synonym | ||
|name=Arabis pycnocarpa var. reducta | |name=Arabis pycnocarpa var. reducta | ||
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|hierarchy=Brassicaceae;Brassicaceae tribe Arabideae;Arabis;Arabis pycnocarpa;Arabis pycnocarpa var. pycnocarpa | |hierarchy=Brassicaceae;Brassicaceae tribe Arabideae;Arabis;Arabis pycnocarpa;Arabis pycnocarpa var. pycnocarpa | ||
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name=Arabis pycnocarpa var. pycnocarpa | name=Arabis pycnocarpa var. pycnocarpa | ||
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|rank=variety | |rank=variety | ||
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|tribe=Brassicaceae tribe Arabideae | |tribe=Brassicaceae tribe Arabideae | ||
|genus=Arabis | |genus=Arabis | ||
Latest revision as of 22:32, 5 November 2020
Stems usually hirsute basally, rarely glabrescent, trichomes often simple, sometimes branched. Basal leaves: blade surfaces sparsely to densely pubescent, trichomes simple and stalked. Fruits (3.5–)4–5.8(–6) cm; style (0.2–)0.5–1 mm, (rarely stout). 2n = 32.
Phenology: Flowering Mar–Jul.
Habitat: Bluffs, cliffs, ledges, rocky hillsides, open woods, bottom lands, gravel bars, meadows, streamsides, upland prairies, grassy swales, hillsides, stream bottoms
Elevation: 0-2500 m
Distribution
Alta., B.C., Man., N.B., Nfld. and Labr. (Labr.), N.W.T., N.S., Ont., Que., Sask., Yukon, Alaska, Ariz., Calif., Colo., Conn., Idaho, Iowa, Kans., Maine, Mass., Mich., Minn., Mont., Nebr., Nev., N.H., N.J., N.Mex., N.Y., N.Dak., Ohio, Oreg., Pa., S.Dak., Utah, Vt., Va., W.Va., Wis., Wyo., Asia (China, Japan, Russian Far East).
Discussion
Some populations in northern Indiana and northern Illinois, [e.g., Herman 8790 (Jo Davies County) and Friesner 19072 (Elkhart County), both at GH] most likely represent hybrids between the two varieties of Arabis pycnocarpa. Trichomes borne proximally on stems of these plants are a mixture of forked and simple. It is expected that hybrids can be found where the ranges of the two taxa overlap.
Selected References
None.