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Cratoneuron filicinum
The presence of paraphyllia on the stems, inflated hyaline alar cells, and strong costa are key characters of this species. Additionally, the ovate, abruptly acuminate leaf shape is diagnostic. Cratoneuron commutatum has falcate-secund leaves, more abundant paraphyllia, and stronger costa, while species of Hygrohypnum lack the inflated alar cells and species of Drepanocladus (sensu lato) have more slender leaves, generally longer upper leaf cells, and a more slender costa.
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Above: whole plant |
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Habit |
Erect to ascending course, yellow-green to lime-green plants with variably irregular branching |
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Stems |
with scattered paraphyllia |
Leaves |
stiff, erect, to somewhat flacate-secund, ovate-lanceolate, abruptly and bluntly acuminate, margins entire, costa single, quite strong and ending in apex |
Leaf Cells |
oblong-rhombic, smooth |
Alar Cells |
enlarged and hyaline to orange, forming bulging, decurrent, well defined groups |
Habitat |
A species of calcareous waters, usually in calcareous seeps and springs, occassionally in peatlands with flowing waters |
Common Associates |
Often with Cratoneuron commutatum, Bryum pseudotriquetrum, and Bracythecium rivulare on rock in seeps, with Scorpidium revolens in montane rich fens. |
pH Meter
