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California Moss eFlora
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Jan 1 2013 ·
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The genus Porotrichum is primarily found in tropical regions with our one species broadly distributed in western North America. Many bryologists place this species in Porothamnium, but we find the arguments unconvincing. It is recognizable by the broadly rounded costate and complanately arranged leaves with short cells. It is differentiated from the much smaller Bryolawtonia because the postical (nearest the stem base) leaf margins of Porotrichum are strongly recurved. Porotrichum occupies shaded to intensely shaded recesses in soil banks and rock outcrops at low to medium elevations coastally and in the California mountains.
see key to Neckera Etc.
Species included:
Porotrichum bigelovii (Sullivant) Kindberg