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Aphanorrhegma serratum Sullivant in A. Gray, 1848  

No occurrences found

Family: Funariaceae
serrate aphanorrhegma moss
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Bernard Goffinet in Flora of North America (vol. 27)
Plants gregarious to scattered; leaves slightly twisted when dry; perichaetial leaves erect-spreading when dry, exposing the capsule. Capsules mature (Jul) Sep-Dec. Soil, clay, along creeks or trails in places subject to inundation, rarely among other mosses; low to moderate elevations; Ont., Que.; Ark., Conn., D.C., Fla., Ill., Ind., Iowa, Kans., Ky., La., Md., Mich., Minn., Miss., Mo., Nebr., N.J., N.Y., N.C., Ohio, Okla., Pa., Tenn., Va., Vt., W.Va., Wis. 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.

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