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Montana Field Guides

Beautiful Bryum Moss - Bryum calobryoides


Global Rank: G3
State Rank: SU

Agency Status
USFWS:
USFS:
BLM:
MNPS Threat Rank:

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General Description
Plants: Acrocarpous (Vitt 1988). Growing in cushions or mats, sometimes compactly so, brilliant green above, brown below. Stems catkin-like, 5-20 mm in length, seldom branched, if at all; rhizoidal (FNA 2014).

Leaves: Upright when wet, 0.2-1.2 mm in length, nearly round to egg-shaped, strongly cupped, with a green base; margins smooth, flat above, faintly curved back and downward below, not bordered; apex hood-like, not transparent, acute to widely curved, typically with a short point (of 2 cells or more) in the lower leaves (but not in the upper leaves), the point occasionally transparent; costa ending before or seldom flush with the tip (FNA 2014).

Leaf Cells: Unistratose; lower laminal cells mostly nearly square; upper laminal cells erratically diamond-shaped, not porose (FNA 2014).

Phenology
Fruit ripens in summer (FNA 2014).

Species Range
Unknown/Undetermined
 


Range Comments
Endemic to western North America. Canada: BC, AB and QC; USA: WA and OR to MT, also CA and CO (FNA 2014). In Montana, known from Missoula County (Elliott 2016).

Summary of Observations Submitted for Montana
Number of Observations: 2

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Relative Density

Recency

 

(Observations spanning multiple months or years are excluded from time charts)



Habitat
Calcareous damp soil and rocks from moderate to high elevations (Elliott 2016).

Reproductive Characteristics
Fruiting unknown. Specialized vegetative reproduction by bulbils in leaf axils absent (FNA 2014).

References
  • Literature Cited AboveLegend:   View Online Publication
    • Elliott, J. and A. Pipp. 2016 (forthcoming). Checklist of Montana Mosses. Revised 2016. Prepared by the Montana Natural Heritage Program, Helena, Montana. 90 pp.
    • Flora of North America Editorial Committee, eds. 2014. Flora of North America North of Mexico. Volume 28. Bryophytes: Mosses, Part 2. Oxford University Press, Inc., NY. xxi + 702 pp.
    • Vitt, D. J. Marsh, and R. Bovey. 1988. Mosses, Lichens & Ferns of Northwest North America. Seattle, WA: University of Washington Press. 296 p.
  • Additional ReferencesLegend:   View Online Publication
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    • Lawton, E. 1971. Keys for the Identification of the Mosses on the Pacific Northwest. Reprinted from 'Moss Flora of the Pacific Northwest'. Published as Supplement No. 2 of the Journal of the Hattori Botanical Laboratory. Nichinan, Miyazaki, Japan. 66 pp.
    • Lawton, E. 1971. Moss Flora of the Pacific Northwest. Hattori Botanical Laboratory. Japan: Yamabuki-cho, Shinjuku-ku, Tokyo. 362 pages plus appendices.
    • Malcolm, B., N. Malcolm, J. Shevock, and D. Norris. 2009. California Mosses. Nelson, New Zealand: Micro-Optics Press. 430 pp.
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Citation for data on this website:
Beautiful Bryum Moss — Bryum calobryoides.  Montana Field Guide.  .  Retrieved on , from