HYPNUM PYGMÆUM, Schimp.
Tab. 98.
Plantæ minutulæ, deprcsso- et implexo-cæspitantes, colore viridi in luteo-variegatum vergente.
Caulis uncialis et ultra, parce divisus, valde papillosus, breviter bipinnato-ramulosus; ramis ramulisque tenuissimis.
Folia heteromorpha, caulina niulto majora, distantia, late deltoidea, subdecurrentia, longius capillari-acuminata, patentissima, ramorum et ramulorum ovato-lanceolata vel elongato-ovata, acutata, erecto-patentia, laxe incumbentia, crassiuscula, opaca, utraque pagina dense papillosa, margine toto papilloso-crenulata; costa valida pellucida infra apicem desinente; rete uniformi e cellulis minutissimis liexagono-rotundis granuloso- -chlorophyllosis exstructo; paraphylliis subnullis: perichætialia sublævia, laxius longiusque areolata, interiora vaginantia, elongato-lanceolata, tenuiter acuminata, costata, superne leniter serrulata.
Flores monoici, cauligeni: masculi gemmacei; perigonialibus ecostatis.
Capsula altius pedicellata, brevi-oblonga, arcuata, inæqui-lateralis, macrostoma; peristomio hypnoideo, dentibus apice flexuoso-filescentibus, ciliolis ternatis brevibus; annulo perfecto conspicuo; opercnlo e basi conica subulirostro; calyptra majuscula.
Thuidium pygmæum, Schimp. Bryol. Europ.
Hypnum pygmæum (Schimp.), Sulliv. Mosses U. States, p. 67; Sulliv. & Lesqx. Musc. Bor.-Amer. Exsicc. (ed. 1), No. 275.
Hab. Grows in thin close mats, on limestone rocks, in shaded ravines, Central Ohio. Rare.
Very near H. minutulum: distinguished however by its smaller
