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Montana Field Guides

Crispy Apple Moss - Bartramia pomiformis


Global Rank: G5
State Rank: SNR

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

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General Description
Plant: Dense tufts. Green or glaucous green. Stems 2-10 cm tall, usually branched. Rhizoids papillose and occurring in conspicuous clusters.

Leaf: When dry, leaves crisped and contorted or flexuose to almost straight. Linear-lanceolate, 4-9 mm long, base slightly sheathing, and not clearly differentiated. Margins recurved from base to at least mid-leaf, serrate from apex to below mid-leaf. Teeth single or double. Costa excurrent.

Leaf Cells: In cross-section the laminal cells are of 1-layer and marginal cells are 1-layer to usually 2-layers. Median and upper leaf cells quadrate to rectangular, papillose on the cell lumen. Basal cells usually longer and with papillae on the cell’s end.

Phenology
Capsules ripen February-November (FNA 2014).

Range Comments
Greenland; Canada: BC, NB, NL, NS, NU, ON, QC, SK; United States: AL, AK, AR, CA, CN, DE, DC, GA, ID, IL, IN, IA, KS, KY, ME, MD, MA, MI, MN, MS, MO, MT, NE, NH, NJ, NY, NC, ND, OH, OK, OR, PA, RI, SC, SD, TN, VT, VA, WA, WV, WI; s South America (Tierra del Fuego); Europe; n, c, e Asia; n Africa; Atlantic Islands (Madeira) (FNA 2014). In Montana, known from Flathead, Glacier, Lake, Lincoln, Missoula, Prairie, and Sanders Counties (Elliott 2016).

Habitat
On soil, soil over rock, rock and rock crevices, logs and bottoms of trees, in shady damp woods. From low elevations to 6,000 feet (FNA 2014).

Reproductive Characteristics
Seta is 6-18 mm tall. Capsules green and erect when young, becoming brown, horizontal, zygomorphic, ribbed when dry, and 1.5-2 mm long in maturity.

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.
  • 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.
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Citation for data on this website:
Crispy Apple Moss — Bartramia pomiformis.  Montana Field Guide.  .  Retrieved on , from