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Catoscopium nigritum
When sterile, this moss has little character and except for the habitat could be mistaken for the ubiquitous Ceratodon purpureus – the latter has a few marginal notches just below the leaf apices. However, Ceratodon never occur in rich fen lawns. Catoscopium leaves are small (about 1.0-1.3 mm) and have smooth, quadrate cells. Catoscopium is usually fertile, with black, globose, nodding capsules looking like golf clubs. These are distinctive and no other species has capsules as these.
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Habit |
Small plants forming dense, dark-green cushions, unbranched, erect |
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Leaves |
reddish, with scattered dark rhizoids |
Leaf Cells |
quadrate, smooth, longer below |
Alar Cells |
not differentiated |
Habitat |
Along the edges of flarks and carpets where it forms darkish cushions, sometimes in lawns with a vairety of extreme rich fen species. |
Common Associates |
Often with Scorpidium revolvens |
pH Meter
