DESMATODON PLINTHOBIUS, Sulliv. & Lesqx.
Tab. 30.
Plantæ humiles, in cæspitibus pulvinatis e glauco-viridi canesccntibus confertæ.
Caulis simplex vel innovatione divisus, subsemiuncialis, radiculis usque ad apicem instructus.
Folia sicca tortilia, liumida erecto-patentia; inferiora ovato-oblonga, brevipila; terminalia ligulato-oblonga, obtusa, carinato-concava, toto ambitu anguste arete revoluta ut marginata videantur, inferne laxius pellucide oblongo- superne minute quadrato-areolata, valde chlorophyllosa, papillosa; costa valida lutescente in pilum (folii fere longitudine) incanum læve flexuosum producta.
Flores dioici: masculi gemmacei, terminales ; antheridiis 8–10 copiose paraphysatis.
Capsula cylindraceo-oblonga, erecta, recta vel curvula, cucullato-calyptrata, in pedicello 5–10-lineari elata, speciose annulata; operculo e basi conica crasse obtuse rostrato; peristomio brevi, dentibus sedecem fragilibus baud tortis albidis granulosis remote articulatis ad medium fissis.
Desmatodon plinthobius, Sulliv. et Lesqx. Musc. Bor.-Amer. Exsicc. (ed. 1), No. 94; Sulliv. Mosses U. States, p. 28, t. 2.
Hab. Brick pavements, Charleston, South Carolina, Ravenel.Nashville, Tennessee, Lesquereux. Limestone Rocks, Pennsylvania, Porter. Texas, Lindheimer.
Very like Desmatodon latifolius, Bryol. Europ.; but that species has a leaf with a shorter hair-point, a shorter and wider capsule, an operculum with a short and obtuse rostrum, a longer calyptra descending to the base of the capsule, a simple nar-
