Plagiomnium ciliare

(Müller Hal.) T. J. Koponen

Ann. Bot. Fenn. 5: 146. 1968.

EndemicIllustrated
Basionym: Mnium affine var. ciliare Müller Hal. Syn. Musc. Frond. 1: 159. 1848,
Treatment appears in FNA Volume 28. Treatment on page 231. Mentioned on page 229, 230, 233, 234.

Erect stems 2–5 (–9) cm, not dendroid; sterile stems to 10 cm. Leaves green or yellow-green, crisped and contorted when dry, flat when moist, ovate, elliptic, oblongelliptic, or rarely obovate, (3–) 4–6 (–10) mm; base narrowly long-decurrent; margins toothed to near base, smaller leaves sometimes nearly entire, teeth blunt or less commonly sharp, of (1–) 2–3 (–4) cells; apex rounded, occasionally truncate or obtuse, rarely retuse, cuspidate or apiculate, cusp occasionally toothed; costa percurrent, excurrent, or rarely subpercurrent; medial laminal cells elongate, rarely ± isodiametric (especially near margins), 45–85 µm, less than 1/2 size near margins, in ± longitudinal, occasionally diagonal rows, collenchymatous, sometimes weakly, walls pitted, pits sometimes indistinct or absent; marginal cells linear, sometimes short-linear or rhomboidal, in (2–) 3–4 rows. Sexual condition dioicous. Seta 1–3, yellowish or brownish green, 2–4 cm. Capsule pendent, cylindric, 3–4.5 mm, neck not distinct; operculum conic-apiculate. Spores 18–24 µm.


Phenology: Capsules mature late spring.
Habitat: Humus, soil, logs, rock, tree bases in swamps and mesic hardwood forests, wet and fire-dependent forests/woodlands, cliffs/talus
Elevation: low elevations

Distribution

V28 367-distribution-map.gif

Alta., B.C., Man., N.B., Nfld. and Labr., N.W.T., N.S., Ont., P.E.I., Que., Sask., Ala., Alaska, Ariz., Ark., Conn., Del., Fla., Ga., Ill., Ind., Iowa, Kans., La., Maine, Md., Mich., Minn., Miss., Mo., Mont., Nebr., N.H., N.Y., N.C., Ohio, Okla., Oreg., Pa., S.Dak., Tenn., Tex., Va., Wash., W.Va.

Discussion

Populations of Plagiomnium ciliare having leaves with poorly developed marginal teeth appear to be fairly common and are often difficult to identify. When well developed, the teeth are straight-sided, fingerlike, and sometimes perpendicular to the margins. The usually long-decurrent leaf bases separate this species from P. ellipticum and P. rostratum. The rounded marginal teeth and, in many instances, the rounded leaf apices separate it from P. medium, the species most commonly confused with it in herbaria. Plagiomnium ciliare and P. ellipticum were considered by H. A. Crum and L. E. Anderson (1981) to be varieties of Mnium affine Blandow ex Funck [Plagiomnium affine (Blandow ex Funck) T. J. Koponen]. However, P. affine is a Eurasian species that is absent from North America.

Selected References

None.

Lower Taxa

None.
... more about "Plagiomnium ciliare"
blackish +, orange-yellow +, reddish-brown +, yellowish-brown +, yellowish green +, red +, brown +  and yellow +
apiculate +  and cuspidate +
retuse +, obtuse +, truncate +  and rounded +
Terry T. McIntosh +  and Steven G. Newmaster +
(Müller Hal.) T. J. Koponen +
long-decurrent +
Mnium affine var. ciliare +
cucullate +
yellowish-brown +  and yellow +
cylindric +
0.3 cm3 mm <br />0.003 m <br /> (0.45 cm4.5 mm <br />0.0045 m <br />) +
undifferentiated +
2 +  and 3 +
nodulose +
excurrent +  and percurrent +
subpercurrent +
toothed +
Alta. +, B.C. +, Man. +, N.B. +, Nfld. and Labr. +, N.W.T. +, N.S. +, Ont. +, P.E.I. +, Que. +, Sask. +, Ala. +, Alaska +, Ariz. +, Ark. +, Conn. +, Del. +, Fla. +, Ga. +, Ill. +, Ind. +, Iowa +, Kans. +, La. +, Maine +, Md. +, Mich. +, Minn. +, Miss. +, Mo. +, Mont. +, Nebr. +, N.H. +, N.Y. +, N.C. +, Ohio +, Okla. +, Oreg. +, Pa. +, S.Dak. +, Tenn. +, Tex. +, Va. +, Wash. +  and W.Va. +
low elevations +
yellow +  and yellowish-brown +
brown +  and yellow +
lanceolate-acuminate +
Humus, soil, logs, rock, tree bases in swamps and mesic hardwood forests, wet and fire-dependent forests/woodlands, cliffs/talus +
crowded +  and distant +
0.6 cm6 mm <br />0.006 m <br /> (1 cm10 mm <br />0.01 m <br />) +
yellow-green +  and green +
erect-spreading +
obovate +, oblongelliptic +, elliptic +, ovate +  and crisped +
larger +  and small +
0.4 cm4 mm <br />0.004 m <br /> (0.6 cm6 mm <br />0.006 m <br />) +
yellow-green +  and green +
dioicous +  and sexual +
rhomboidal +  and short-linear +
not distinct +
rostrate +  and conic-apiculate +
Capsules mature late spring. +
diagonal +
indistinct +
Ann. Bot. Fenn. +
smaller +  and larger +
diagonal +
indistinct +
brownish green +  and yellowish +
straight +  and flexuose +
1 +  and 3 +
elongate +
2 cm20 mm <br />0.02 m <br /> (4 cm40 mm <br />0.04 m <br />) +
Endemic +  and Illustrated +
spheric +
not dendroid +
5 cm50 mm <br />0.05 m <br /> (9 cm90 mm <br />0.09 m <br />) +
brownish +, yellow-green +  and green +
0 cm0 mm <br />0 m <br /> (10 cm100 mm <br />0.1 m <br />) +
Plagiomnium ciliare +
Plagiomnium +
species +
sharp +  and blunt +
indistinct +
Not (?) +  and Pitted (?) +
5 cm50 mm <br />0.05 m <br /> (10 cm100 mm <br />0.1 m <br />) +