HYPNUM HIANS, Hedw.
Tab. 104.
Plantæ laxe depresso-cæspitantes, læte viridi-lutescentes, nitidi.
Caulis 3–7-uncialis, pallidus, fiexilis, parce divisus, prorepens, fasciculato-radiculosus, irregulariter distiche ramulosus; ramulis subsimplicibus.
Folia laxius complanato-disposita, lateralia valde patcntia, cordato-ovata, longius breviusve acuta, superne serrulata, marginibus plus minus recurvis; costa tenui supra medium abrupte desinente; reticulo e cellulis elongato-hexagonis exstructo: perichætialia longe tenui-acuminata, apice argute serrata recurvo-squarrosa, interna subecostata.
Flores dioici, cauligeni; gemmis masculis oblongo-ovatis; antheridiis paraphysatis.
Capsula ovalis et oblonga, cernua, subincurva, annulata; pedicello 6–8-lineari rubello muriculato; vaginula paraphysibus longis e perichætio exsertis hirta; peristomii dentibus lanceolato-subulatis dense articulatis intus prominenter lamellosis, ciliis in carina rima longa hiantibus, ciliolis binis; operculo e basi convexo-conico longe subulirostro, rostro recto sursum vel deorsum spectante; calyptra angusta dimidiata fugaci.
Hypnum hians, Hedw. Sp. Muse. p. 272, t. 70; Brid. Bryol. Univ. 2, p. 456: Sulliv. Musc. Alleghan. No. 53; Mosses U. States, p. 69.
Hypnum prelongum, Linn, ex Müll. Synop. Muse. 2, 447.
Pterigynandrum apiculatum, Brid. Bryol. Univ. 2, p. 195, ex Müll. l. c.
Hab. Moist shady banks, hillsides, in woods, &c, common.
H. hians, Hedw., scarcely affords characters sufficiently decided to separate it from H. prælongum, Linn., a moss subject to
