IU0NRS musoorum. 1<;:; 



HYPNUM HIANS, Iledw. 

 Tab. 104. 



Plants laxe depresso-caespitantes, laete viridi-lutescentes, ni- 



tidi. 



Caulis 3 - 7-uncialis, pallidus, fiexilis, parce divisus, prorepcns, 

 fasciculato-radiculosus, irregulariter distichc ramulosus ; ramulis 

 subsiinplicibus. 



Folia Iaxius complanato-disposita, lateralia valde patcntia, 

 cordato-ovata, longius breviusve acuta, superne serrulata, margi- 

 nibus plus minus recurvis ; costa tenui supra medium abrupte 

 dcsinente ; reticulo e cellulis elongato-hexagonis exstructo : peri- 

 chaetialia longe tenui-acuminata, apice argute serrata recurvo- 

 squarrosa, interna subecostata. 



Flores dioici, cauligeni ; gemmis masculis oblongo-ovatis ; an- 

 theridiis paraphysatis. 



Capsula ovalis et oblonga, cernua, subincurva, annulata ; pedi- 

 cello 6-8-lineari rubello muriculato ; vaginula paraphysibus lon- 

 gis e perichaetio exsertis hirta ; peristomii dentibus lanceolato- 

 subulatis dense articulatis intus prominenter lamellosis, ciliis in 

 carina rima longa hiantibus, ciliolis binis ; operculo e basi con- 

 vexo-conico longe subulirostro, rostro recto sursum vel deorsum 

 spectante ; calyptra angusta dimidiata fugaci. 



Hypnum hians, Iledw. Sp. Muse. p. 272, t. 70; Brid. Bryol. Univ. 2, p. 456 : 



Sulliv. Muse. Alleghan. No. 53 ; Mosses U. States, p. 69. 

 Hypnum pr.elongum, Linn, ex Mull. Synop. Muse. 2, 447. 

 Pterigynandrum apiculatum, Brid. Bryol. Univ. 2, p. 195, ex Mull. 1. c. 



Hab. Moist shady banks, hillsides, in woods, &c, common. 



H. hians, Hedw., scarcely affords characters sufficiently de- 

 cided to separate it from H. prcclongum, Linn., a moss subject to 



