Micromitrium megalosporum

Austin

Musci Appalach., 11. 1870,.

Basionym: Ephemerum megalosporum (Austin) E. S. Salmon J. Linn. Soc., Bot. 34: 166. 1899
Synonyms: Nanomitrium megalosporum (Austin) E. Britton
Treatment appears in FNA Volume 27. Treatment on page 649. Mentioned on page 647, 648.

Plants scattered or gregarious in usually sparse protonemata, yellow-green to orange-brown. Stems less than 0.2 mm. Leaves erect or spreading, broadly ovate-lanceolate and somewhat clasping at base, acuminate, 0.5–1.1 × 0.14–0.43 mm, margins usually ± incurved beyond the middle, entire proximally and distally entire to serrulate. Sexual condition synoicous. Capsule cleistocarpous or rarely dehiscing by a ring of differentiated cells distal to the equator, orange-brown, globose or slightly flattened, rarely broadly ovoid, with a short, broad apiculus; exothecial cells in 2 layers, stomates confined to distal half, sometimes absent. Spores fewer than 100, various shapes, proximal face only rarely concave, 55–83 × 37–67 µm, orange-brown.


Phenology: Capsules mature summer–winter, with some capsules persisting through spring with leaves intact or eroded.
Habitat: In sun or partial shade, unfertilized bare soil, sparsely vegetated turf
Elevation: low to moderate elevations (0-700 m)

Distribution

V27 956-distribution-map.gif

Ark., Conn., Fla., Ga., La., Maine, Md., Mich., Miss., Mo., N.J., N.C., Pa., Wis., West Indies (Cuba), e Asia (Japan), Africa (Cameroon).

Discussion

Selected References

None.

Lower Taxa

None.
... more about "Micromitrium megalosporum"
Virginia S. Bryan +
Austin +
Ephemerum megalosporum +
Ark. +, Conn. +, Fla. +, Ga. +, La. +, Maine +, Md. +, Mich. +, Miss. +, Mo. +, N.J. +, N.C. +, Pa. +, Wis. +, West Indies (Cuba) +, e Asia (Japan) +  and Africa (Cameroon). +
low to moderate elevations (0-700 m) +
In sun or partial shade, unfertilized bare soil, sparsely vegetated turf +
Capsules mature summer–winter, with some capsules persisting through spring with leaves intact or eroded. +
Musci Appalach., +
Nanomitrium megalosporum +
Micromitrium megalosporum +
Micromitrium +
species +