Plagiomnium drummondii

Erect stems 1–4 cm, not dendroid; sterile stems to 7 cm. Leaves light green or yellow-green, moderately contorted when dry, flat when moist, obovate or sometimes elliptic, 2–6 mm; base long-decurrent; margins toothed from about mid leaf to apex, sometimes to just below mid leaf, teeth sharp, of 1–2(–3) cells; apex acuminate or acute, occasionally obtuse or rounded, short- to long-cuspidate, cusp toothed; costa percurrent, excurrent, or rarely subpercurrent; medial laminal cells ± isodiametric or short-elongate, 30–50(–60) µm, much smaller near margins, often less than 1/2 size, in longitudinal, not diagonal rows, not or weakly collenchymatous, walls not pitted; marginal cells linear, in 2–4 rows. Sexual condition synoicous. Seta 1–3(–4), yellow to reddish brown, 1.2–3 cm. Capsule horizontal to pendent, ovoid or obovoid, 2–3 mm, neck not distinct; operculum conic-apiculate. Spores 18–25 µm.

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

Distribution

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Alta., B.C., Man., N.B., N.W.T., N.S., Ont., Que., Sask., Idaho, Md., Mich., Minn., Mont., Nebr., N.Y., N.C., Ohio, Pa., Wash., W.Va., Europe, Asia.

Discussion

See discussion for this species under 3. Plagiomnium cuspidatum.

Selected References

None.

Lower Taxa

None.