Brachydontium olympicum

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Localities documented in Tropicos sources

Brachydontium olympicum (E. Britton) T.T. McIntosh & J.R. Spence:
Canada (North America)
United States (North America)

Note: This information is based on publications available through Tropicos and may not represent the entire distribution. Tropicos does not categorize distributions as native or non-native.

References:

Flora of North America Editorial Committee. 2007. Bryophytes: Mosses. 27(1): i–xxi, 1–711. In Fl. N. Amer. Oxford University Press, New York.
McIntosh, T. T. & J. R. Spence. 1986 [1987]. Grimmia olympica Britt. (Grimmiaceae) is transferred to Brachydontium (Seligeriaceae). Bryologist 89: 200–202.

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Missouri Botanical Garden, 4344 Shaw Boulevard, St. Louis, MO 63110 USA

Localities documented in Tropicos sources

Grimmia olympica E. Britton:
Japan (Asia)
United States (North America)

Note: This information is based on publications available through Tropicos and may not represent the entire distribution. Tropicos does not categorize distributions as native or non-native.

References:

Lawton, E. 1971. Moss Fl. Pacific Northwest xiii + 362 pp. + 195 pl. Hattori Botanical Laboratory, Nichi-nan, Japan.
Noguchi, A. & Z. Iwatsuki. 1988. Ill. Moss Fl. Japan 2. Pp. 243–491, index. Hattori Botanical Laboratory, Nichinan.
Deguchi, H. 1978 [1979]. A revision of the genera Grimmia, Schistidium and Coscinodon (Musci) of Japan. J. Sci. Hiroshima Univ., Ser. B, Div. 2, Bot. 16: 121–256.

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Missouri Botanical Garden, 4344 Shaw Boulevard, St. Louis, MO 63110 USA

Global Range: Endemic to western North America. According to Lawton (1971), known from British Columbia (Glacier Lake), Washington (Olympic Mountains, Mt Rainier, Mt St. Helens), Oregon (Mt Hood). McIntosh & Spence (1986) cite the species from Japan.

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Morphology

Description

Stems 2-5 mm. Leaves 1-2.5 mm, distal laminal cells mostly isodiametric, 1:1, with a few cells 2:1 or transversely elongate, areolation somewhat irregular, proximal cells longer. Seta 0.5-2 mm, flexuose when dry. Capsule spherical to short-ovate, 0.4-0.6 mm. Peristome absent. Spores 6-10 µm.

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Diagnostic Description

Synonym

Grimmia olympica E. Britton, Bryologist 13: 59, plate 7. 1910

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Missouri Botanical Garden, 4344 Shaw Boulevard, St. Louis, MO, 63110 USA

Habitat

Comments: The species occurs "on rock & soil in rock crevices in the mountains from 1800-2000 m (Lawton 1971). Specimen data given in McIntosh & Spence (1986) give, "crevice on side of boulder", "on steep slope with late snow release, thin soil over basalt", "soil pocket in boulder in stream", "on shaded basalt boulders near snowmelt area", "at base of volcanic outcrop", "on thin mud over volcanic outcrop", "on thin mud at base of basalt cliff near stream in late snow release area", "on soil over rock", "humid crevice of boulder in outwash area".

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Conservation Status

National NatureServe Conservation Status

Canada

Rounded National Status Rank: N1 - Critically Imperiled

United States

Rounded National Status Rank: NNR - Unranked

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NatureServe Conservation Status

Rounded Global Status Rank: G2 - Imperiled

Reasons: Brachydontium olympicum is generally considered to be a North American endemic known from only 10 locations within its range (Pacific Northwest and 1 location in Alaska).

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