HYPNUM ACUMINATUM, Beauv.
Tab. 116.
Plantæ cæspites late extensos, nunc laxos profundos nunc deprcsso-densiusculos, efformantes, colore e saturate viridi lutescenti-sericco insignes, copiose capsuligeræ.
Caulis prostratus, radiculosus, vetustior subdenudatus; ramis vage vel remotius disticlie ramulosis, ramulis inæqualibus acutis plumoso- vel subjulaceo-foliosis.
Folia conferta, undique erccto-patentia, recta, elongato-ovata acuta, vel ovato-lanceolata longius breviusve anguste acuminata, concava, marginibus præsertim inferioribus recurva, e medio ad apicem leniter serrulata, vix striata; costa supra medium evancscente; textura tenui, cellulis virescentibus elongatis utrinque acutis, angularibus concoloribus latioribus subquadratis granulosis perichætialia laxa, laxius reticulata, longe filiformi-attenuata, superne vario modo curvata, costa longiore vel breviore quandoque obsoleta.
Flores dioici, numerosi, paraphysati, ramigeni.
Capsula cylindracea-oblonga vel anguste oblongo-elliptica, recta, erecta, asqualis, raro asymmetrica atque curvula, in pedicellum rutilantem subuncialem sensim defluens, rufescens, exannulata; operculo altius conico; peristomii dentibus lineali-lanceolatis minus crebre articulatis quam icon indicat, ciliis angustis punctatis in carina hiantibus, ciliolis subnullis.
Hypnum acuminatum, Beauv. Prod. p. 60; C. Müll. Synop. Musc. 2, p. 335; Sulliv. Mosses U. States, p. 75.
Hypnum erectum, Drumm. Musc. Amer. No. 224.
Leskea acuminata, Hedw. Sp. Muse. p. 224, t. 56; Brid. Bryol. Univ. 2. p. 296; Hook. & Wils. in Drumm. Muse. Amer. Coll. 2, No. 126-128.
Leskea setosa, Hedw. Sp. Muse. p. 226, t. 57; Brid. Bryol. Univ. 2, p. 302; Hook. & Wils. in Drumm. Muse. Amer. Coll. 2, No. 124 & 125.
Leskea Rupincola, Hedw. Sp. Muse. p. 227, t. 54 ; Brid. Bryol. Univ. 2, p. 302.
Leskea Beyrichii, Hampe in Linnæa, 13, p. 47. & Icon. Musc. t. 7.
