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Rh PTYCHOMITRIUM INCURVUM, Schwægr. Tab. 39. pusillæ, laxe cæspitosæ, rigidulæ, saturate virides, a'tate fusco-flavescentes.

2–3-lincaris, simplex vel parcc innovando-ramosus, conferte foliosus.

erecta vel incurvulo-erecta, siccitate cirrhato-crispata, lineali-lanceolata, obtusa, crassiuscula, opaca, leniter canaliculata, marginibus plana; costa lata cum vel sub apice evanida; cellulis minutis densis quadratis valde chlorophyllosis, angularibus oblongis majoribus laxioribus translucidis: perichaetialia comalibus similia.

monoici: masculi gemmacei, axillares vel cladogeni; paraphysibus subnullis.

ovalis, erecta, brevi-pedicellata; peristomii dentibus 16 longis subulatis remote nodoso-articulatis hic illic linea divisuriali notatis nunquam in crura solutis pallide rufo-purpureis papillosis; annulo specioso; operculo conico-aciculari recto; calyptra mitraeformi longirostra plicata infra capsulam mediam producta, matura profunde 8–10-laciniata.

On exposed rocks, Eastern New York, and southward to Georgia; also Southern Ohio.