HYPNUM LÆTUM, Brid.
Tab. 115.
Plantæ laxe intricato-cæspitosao; cæspitibus extebsis leniter tumcsccntibus e viridi lutcscentibus sericeo-nitidis.
Caulis prostratus, divisus ; ramis ramulisquc plus minus approximatis inæqualibus erectis subsciuroideis apice attenuatis.
Folia conferta, undique erecto-patentia, e basi ovata concava marginibus late recurva lanceolata, in acumen rectum brevius longiusve sensim angustata, plus minus striata, toto fere ambitu leniter serrulata; costa ultra medium procedente; reti tenui elliptico-lineari, cellulis ad angulos basilares subquadrates numerosis granulosis: perichætialia numerosa, membranacea, mollia, intima laxe vaginantia oblonga ex apice abrupto filiformi-acuminata, acumine varie flexo.
Flores dioici: feminei plerumque cauligeni; masculis supra ramulorum basin sitis; paraphysibus in utroque flore copiosis.
Capsula in pedicello subunciali purpureo laevi oblongo-cylindracea, curvula, leniter inclinata, vel brevior turgida erecto-cernua, pachyderma, exannulata, badia; operculo elongato-conico vel conico brevi-rostrato; peristomii dentibus lanceolato-subulatis luteis densius articulatis, ciliis rimulosis punctatis, ciliolis binis nodosis.
Hypnum Lætum, Brid. Bryol. Univ. 2, p. 4 79; Müll. Synop. Musc. 2, p. 357 ; Sulliv. Mosses U. States, p. 75.
Hypnum luteolum, Müll. Synop. Musv. 2, p. 357.
Hypnum salebrosum, Sulliv. Musc. Alleghan. No. 43.
Brachythecium Lætum, Bryol. Europ. t. 554 ; Sehimp. Synop. Musc. Europ. p. 531.
Hab. On decayed logs and the ground, in moist shaded places; common.
