Difference between revisions of "Aphanorrhegma serratum"

(Wilson & Hooker) Sullivant

in A. Gray, Manual, 647. 1848,.

Basionym: Schistidium serratum Wilson & Hooker Musc. Amer. S. States 2: no. 20. 1841
Treatment appears in FNA Volume 27. Treatment on page 181. Mentioned on page 195.
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|place=647. 1848,
 
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|name=Schistidium serratum
 
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|species=Aphanorrhegma serratum

Latest revision as of 22:25, 5 November 2020

Plants gregarious to scattered; leaves slightly twisted when dry; perichaetial leaves erect-spreading when dry, exposing the capsule.


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

Distribution

V27 236-distribution-map.gif

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.

Discussion

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.

Selected References

None.

Lower Taxa

None.
... more about "Aphanorrhegma serratum"
Bernard Goffinet +
(Wilson & Hooker) Sullivant +
Schistidium serratum +
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. +  and Wis. +
low to moderate elevations +
Soil, clay, along creeks or trails in places subject to inundation, rarely among other mosses +
Capsules mature (Jul) Sep–Dec. +
in A. Gray, Manual, +
Aphanorrhegma serratum +
Aphanorrhegma +
species +