Philonotis marchica
Bryol. Univ. 2: 23. 1827.
Plants small, in loose to dense tufts, yellowish or bright green, brown proximally. Stems 1–6 cm, erect, simple or 2-fid, tomentose proximally. Leaves erect-spreading when dry, somewhat divergent when moist, triangular to slightly ovatelanceolate, 1–2.3 mm; margins plane or sometimes narrowly revolute, serrulate nearly to base, teeth single; apex acuminate; costa percurrent to long-excurrent, abaxial surface weakly papillose; laminal cells rectangular, less than 9: 1, prorulose, prorulae rounded, near distal ends or sometimes both ends on abaxial side; basal-cells oblong, 18–45 × 6–15 µm; distal cells linear-oblong, 20–30 × 4–8 µm. Specialized asexual reproduction by propagula sometimes borne in leaf-axils. Sexual condition dioicous; perigonia discoid. Seta 1.5–4 cm, flexuose. Capsule 1–2.5 mm. Spores spheric, 20–30 µm.
Phenology: Capsules mature Mar–Sep.
Habitat: Rock, soil, wet places, roadsides, springs
Elevation: low to high elevations (30-3000 m)
Distribution
Alta., B.C., Man., N.S., Que., Ala., Ariz., Ark., Colo., Fla., Ga., Idaho, Ill., Ind., Iowa, Kans., Mich., Minn., Miss., Mo., Nebr., N.H., N.Mex., N.Y., N.C., Ohio, Okla., Oreg., Pa., Tenn., Tex., Utah, Vt., Va., W.Va., Wis., Wyo., Mexico, Central America, n South America (Colombia), Europe, Asia, n Africa, Atlantic Islands (Macaronesia)
Discussion
Philonotis marchica is recognized by its usually plane, singly serrulate leaf margins and laminal cells bearing rounded prorulae near the distal ends. Philonotis capillaris, a species mainly of Pacific coastal habitats, shares with P. marchica the singly serrulate leaf margin. However, P. capillaris, in contrast to P. marchica, has a more or less decumbent, flaccid habit, more distant, widespread leaves, shorter and broader distal laminal cells and obscure prorulae in the basal half of the leaf.
Selected References
None.