Oncophorus wahlenbergii

Bridel

Bryol. Univ. 1: 400. 1826,.

Synonyms: Oncophorus wahlenbergii var. compactus (Bruch & Schimper) Braithwaite
Treatment appears in FNA Volume 27. Treatment on page 424. Mentioned on page 423, 430, 431, 432.

Plants soft, in small, loose tufts, light to very dark green. Stems 1–2.5 cm. Branch leaves strongly crisped and curled when dry, ovatelanceolate, abruptly subulate, entire or sometimes serrated above, 3–6 mm, subtubulose above, strongly sheathing at base, margins plane; costa mostly percurrent; laminal cells mostly 1-stratose, 2-stratose only at margins; distal laminal quadrate to short-rectangular, incrassate; basal laminal cells elongate, rectangular, incrassate, alar cells not differentiated. Seta (8–) 10–15 (–21) mm. Capsule pale yellowbrown, furrowed when dry, 0.8–2 mm, peristome bright red. Spores 14–20 (–30) µm.


Phenology: Capsules mature late spring–early summer.
Habitat: Rotten logs along streams or in flooded areas, less commonly on soil, humus, rock or bark at the base of coniferous trees (e.g., Thuja)

Distribution

Greenland, Alta., B.C., Man., N.B., Nfld. and Labr. (Nfld.), N.W.T., N.S., Nunavut, Ont., P.E.I., Que., Sask., Yukon, Ala., Alaska, Ariz., Ark., Calif., Colo., Conn., Del., D.C., Fla., Ga., Idaho, Ill., Ind., Iowa, Kans., Ky., La., Maine, Md., Mass., Mich., Minn., Miss., Mo., Mont., Nebr., Nev., N.H., N.J., N.Mex., N.Y., N.C., N.Dak., Ohio, Okla., Oreg., Pa., R.I., S.C., S.Dak., Tenn., Tex., Utah, Vt., Va., Wash., W.Va., Wis., Wyo., Europe, Asia

Discussion

A common epixylic species, Oncophorus wahlenbergii may be confused with the more saxicolous O. virens, which has keeled, revolute, non-sheathing leaves that gradually narrow to the subula. A compact, densely tufted arctic-alpine form has been treated as var. compactus and is often found on dry soil.

Selected References

None.

Lower Taxa

None.
... more about "Oncophorus wahlenbergii"
persistent +  and deciduous +
Steven G. Newmaster +
Bridel +
short to long +
Dicranum sect. Oncophorus +
microphyllous +
sheathing +  and entire +
subulate +, ovatelanceolate +, curled +  and crisped +
0.3 cm3 mm <br />0.003 m <br /> (0.6 cm6 mm <br />0.006 m <br />) +
pseudomonoicous +, dioicous +, autoicous +  and sexual +
reproduction +  and asexual +
cucullate +
pale yellowbrown +
inclined +  and horizontal +
cylindric +
0.08 cm0.8 mm <br />8.0e-4 m <br /> (0.2 cm2 mm <br />0.002 m <br />) +
papillose +  and mammillose +
autoicous +  and sexual +
enlarged +
not differentiated +
quadrate +  and short-rectangular +
Greenland +, Alta. +, B.C. +, Man. +, N.B. +, Nfld. and Labr. (Nfld.) +, N.W.T. +, N.S. +, Nunavut +, Ont. +, P.E.I. +, Que. +, Sask. +, Yukon +, Ala. +, Alaska +, Ariz. +, Ark. +, Calif. +, Colo. +, Conn. +, Del. +, D.C. +, Fla. +, Ga. +, Idaho +, Ill. +, Ind. +, Iowa +, Kans. +, Ky. +, La. +, Maine +, Md. +, Mass. +, Mich. +, Minn. +, Miss. +, Mo. +, Mont. +, Nebr. +, Nev. +, N.H. +, N.J. +, N.Mex. +, N.Y. +, N.C. +, N.Dak. +, Ohio +, Okla. +, Oreg. +, Pa. +, R.I. +, S.C. +, S.Dak. +, Tenn. +, Tex. +, Utah +, Vt. +, Va. +, Wash. +, W.Va. +, Wis. +, Wyo. +, Europe +  and Asia +
Rotten logs along streams or in flooded areas, less commonly on soil, humus, rock or bark at the base of coniferous trees (e.g., Thuja) +
2-stratose +  and 1-stratose +
falcate-secund +
curled +, crisped +, gradually narrowed +  and abruptly subulate +
nonpitted +  and pitted +
toothed +  and forked +
Capsules mature late spring–early summer. +
undifferentiated +
Bryol. Univ. +
1.5 cm15 mm <br />0.015 m <br /> (2.1 cm21 mm <br />0.021 m <br />) +
yellow;reddish yellow +
flexuose +  and straight +
cygneous +  and elongate +
1 cm10 mm <br />0.01 m <br /> (1.5 cm15 mm <br />0.015 m <br />) +
yellow +  and yellow-green +
spheric +
branching;simple +
erect-spreading +
1 cm10 mm <br />0.01 m <br /> (2.5 cm25 mm <br />0.025 m <br />) +
superficial +
Oncophorus wahlenbergii var. compactus +
Oncophorus wahlenbergii +
Oncophorus +
species +
deciduous +
divided +
smooth +  and furrowed +
strumose +
constricted +
0.08 cm0.8 mm <br />8.0e-4 m <br /> (0.2 cm2 mm <br />0.002 m <br />) +
dark green +  and light +
dull +  and glossy to somewhat +