in A. Gray, Manual,647. 1848,
Phenology: Capsules mature (Jul) Sep–Dec.
Habitat: Soil, clay, along creeks or trails in places subject to inundation, rarely among other mosses
Elevation: low to moderate elevations
Aphanorrhegma serratum resembles the sympatric Physcomitrella patens, from which it differs in its capsule’s regular line of dehiscence and collenchymatous exothecial cells; it also grows occasionally with Physcomitrium immersum. The latter two species are small and both have an immersed operculate capsule. Physcomitrium immersum is distinguished by a distal line of dehiscence (versus equatorial in A. serratum), the presence of an annulus of small cells, the thin-walled (versus collenchymatous) exothecial cells, and an urceolate rather than a globose operculate urn. Aphanorrhegma serratum has been reported from Texas by H. A. Crum and L. E. Anderson (1981). I have seen only one collection (Duke) from that state, but the specimen lacks collenchymatous exothecial cells, bears a distinct annulus, and hence is here referred to Physcomitrium immersum.
|Author||Bernard Goffinet +|
|Basionym||Schistidium serratum +|
|Elevation||low to moderate elevations +|
|Habitat||Soil, clay, along creeks or trails in places subject to inundation, rarely among other mosses +|
|Illustrator||Patricia M. Eckel +|
|Phenology||Capsules mature (Jul) Sep–Dec. +|
|Taxon name||Aphanorrhegma serratum +|
|Taxon parent||Aphanorrhegma +|
|Taxon rank||species +|
|Volume||Volume 27 +|