Difference between revisions of "Imbribryum muehlenbeckii"
Bryologist 108: 449. 2005.
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− | |basionyms={{Treatment/ID/ | + | |basionyms={{Treatment/ID/Basionym |
|name=Bryum muehlenbeckii | |name=Bryum muehlenbeckii | ||
|authority=Bruch & Schimper | |authority=Bruch & Schimper | ||
+ | |publication_title=Bryol. Europ. | ||
+ | |publication_place=4: 163. plate 381. 1846 | ||
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− | |source xml=https://jpend@bitbucket.org/aafc-mbb/fna-data-curation.git/src/ | + | |source xml=https://jpend@bitbucket.org/aafc-mbb/fna-data-curation.git/src/f6b125a955440c0872999024f038d74684f65921/coarse_grained_fna_xml/V28/V28_234.xml |
|genus=Imbribryum | |genus=Imbribryum | ||
|species=Imbribryum muehlenbeckii | |species=Imbribryum muehlenbeckii |
Revision as of 19:44, 24 September 2019
Plants small to medium-sized, dark red to red-green, rarely entirely green. Stems 0.5–2(–3) cm, julaceous, without metallic sheen, older stem sometimes densely radiculose. Leaves rigid, imbricate, crowded, dark red to red-green, sometimes dark green, ovate, distinctly concave, 1–2(–3) mm; base not or weakly decurrent; margins revolute proximally, plane distally, entire to finely serrulate distally, limbidium absent; apex rounded to broadly acute, not cucullate; costa reddish, not reaching apex or rarely percurrent, awn absent; basal laminal cells occasionally pigmented, in 1 row; proximal cells abruptly quadrate, with scattered short-rectangular cells, 1–2:1; medial and distal cells hexagonal, (40–)50–70 × (16–)18–24 µm, (2–)3–4:1, walls firm, parallel to costa. Specialized asexual reproduction rare, by rhizoidal tubers, on rhizoids arising from leaf axils, orange-red to red-brown, 100–200 µm. Seta ± straight, red, red-brown, or purple. Capsule nutant, dark red-brown, short-pyriform, 2–3 mm, neck short. Spores 14–18 µm, papillose, yellow-brown.
Phenology: Capsules mature Jun–Aug (summer).
Habitat: Damp shaded siliceous rock, soil in rock crevices, montane
Elevation: moderate to high elevations (500-3000 m)
Distribution
Greenland, B.C., Nfld. and Labr., Ont., Calif., Idaho, Maine, Mich., Mont., Nev., N.H., N.Mex., N.Y., Oreg., Pa., Tenn., Wash., Wyo., w Europe, Asia (Caucasus), Atlantic Islands (Madeira).
Discussion
Imbribryum muehlenbeckii is similar to small forms of I. alpinum, but has strongly concave, ovate leaves, short distal laminal cells, and a weak costa. Most material from western North America can be referred to an undescribed species; see discussion under 1. I. alpinum.
Selected References
None.