. Mosses with hand-lens and microscope : a non-technical hand-book of the more common mosses of the northeastern United States. vided, pale red, minutelyroughened; spores maturing summerto autumn. On rocks, walls, stonysoil, etc., in rather moist places. Fre-quent, often associated with MyurellaCarcyana. The minute, almost pellucidapiculus is usually present on some ofthe leaves, and this, together with theitalicized characters, makes the speciesreadily determinable. Our plants seemsmaller than the European, usually be-ing under an inch in height. D. liiridus Hornsch. Plants dioi-cous, in dens
. Mosses with hand-lens and microscope : a non-technical hand-book of the more common mosses of the northeastern United States. vided, pale red, minutelyroughened; spores maturing summerto autumn. On rocks, walls, stonysoil, etc., in rather moist places. Fre-quent, often associated with MyurellaCarcyana. The minute, almost pellucidapiculus is usually present on some ofthe leaves, and this, together with theitalicized characters, makes the speciesreadily determinable. Our plants seemsmaller than the European, usually be-ing under an inch in height. D. liiridus Hornsch. Plants dioi-cous, in dense tufts, 1-2^ high, some-what branched; leaves closely imbricatewhen dry and scarcely twisted, con-cave, ovate-lanceolate; margins entire,recurved nearly to apex; costa strong,ending in the obtusely acute apex;cells hexagonal or roundish quadrate,not papillose; scarcely different except atextreme base; peristome irregular, simpleor with teeth divided above; sporesmaturing in winter. On rocks, especi-ally limestone. Infrequent, at least inthe eastern portion of our range. F[(:uRE 70,DiJymi/Jiiii liiriJiis I Fron Bry. Kur.). MOSSES WITH HAND-LENS AND MICROSCOPE D. tophaceus (Brid.) Jur. (Trichostoifium topbaceum Brid.) is a species rarein the East, growing on moist limestone soil, and readily distinguished by theshort lingulate obtuse upper leaves with the costa ending below the apex.
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