Andreaea alpina

Hedwig

Sp. Musc. Frond., 49, plate 7, fig. 2p. 1801,

Treatment appears in FNA Volume 27. Treatment on page 103. Mentioned on page 105.
Plants reddish brown to black. Leaves erect-spreading to squarrose, straight, panduriform, widest distally, apex symmetric; costa absent; leaf margins denticulate along leaf base; basal laminal cells rectangular to long-rectangular, marginal cells similar, walls pitted, nodose; medial laminal cells rounded-quadrate to ovate, 1-stratose entirely or sometimes 2-stratose distally, lumens rounded; laminal papillae rare, low. Sexual condition cladautoicous; perichaetial leaves differentiated, convolute-sheathing. Spores 18–28 µm.

Habitat: Wet acidic or basic rock

Distribution

V27 111-distribution-map.gif

Greenland, s, w South America, n Europe.

Discussion

The spores of Andreaea alpina are of two types, the brown spores generally smaller than the green, and apparently abortive. This comparatively robust species is easily identified by the panduriform leaves with basal marginal denticulations.

References

None.

Lower Taxa

No lower taxa listed.