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 roundedquadrate 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.

Selected References

None.

Lower Taxa

None.

"widest" is not a number.

... more about "Andreaea alpina"
Richard H. Zander +
Hedwig +
ending before the apex +, percurrent +  and branched +
campanulate-mitrate +
0.05 cm0.5 mm <br />5.0e-4 m <br /> (0.2 cm2 mm <br />0.002 m <br />) +
distinct +
differentiated +
Greenland +, s +, w South America +  and n Europe +
filamentous +
Wet acidic or basic rock +
dioicous +, cladautoicous +, autoicous +  and sexual +
cladautoicous +  and sexual +
straight +
panduriform +
rounded +
recurved +  and incurved +
2-stratose +  and 1-stratose +
Sp. Musc. Frond., +
tetrahedral +, oval +  and spheric +
small;large +
elongate +
Andreaea alpina +
Andreaea +
species +
transverse +  and longitudinal +
thin +  and thick +
reddish-brown;black +