OF PACIFIC COAST MOSSES. 33 



223. H. pinnatifidum, Snlliv. and Lesqx., Mnsci Exsiec. Amcr., Ed. 2d, No. 513. Ab 



Hypno aureo affinissimo distinguitur : capsula cornua annulo majori, foliis 

 brevius filiform! acuminatis, reti multo laxiore denique inflorescentia revera 

 dioica. 



224. H. Nevadense, Spec. nov. Dioicum, laxo ctespitosum, robustum, lutcscentc 



viride. Caulis primarius rcpens pinnatim ramosus, ramis brcvibus, horizon- 

 talibus vol longioribus, irrcgulariter divisis, arcuato curvatis. Folia lanceo- 

 lata, scnsim brcvi-acuminata, homomallo-curvata, apice minute serrata, costa 

 carinata, profunde biplicata, margine revoluta vel reflcxa, cellulis alaribus 

 perpaucis, irrcgulariter ovalibus. Capsula in pedicello rubello erecta vel 

 sub cernua, ovato-cylindrica, longe rostrata, peristomii interni cilia vel rudi- 

 mentaria, vel nulla; annulus compositus. 

 Hab. on rocks in the spray of Nevada and Bridal Veil Falls, Bol. 



Is distinguished from H. hitescens, Huds., by its green color, larger thick sterns 

 and branches ; the evidently pennate ramification, less marked, however, than in IT. 

 aureum; the alar reticulation scarcely marked by a few oval cells; by the large capsule, 

 the peristome without cilia, etc. The leaves are more regularly and deeply plicate 

 than in any other Camplothedum. 



I 4. BBACHYTHECIUM, Bryol. Ear. 



225. H. Isetum, Brid. 



Hab. the Yosemite Valley. . The plants are sterile, and the species not un- 

 doubtedly ascertained. 



V 



220. H. salebrosum, Hoffm. 



Hab. Fort Colville and Pend' Oreille, Lyall. 



227. H. collinum, Schl. 



Hab. Cascade Mts., Lyall ; Mr. Bolander sent it sterile from the Yosemite 

 Valley. 



228. H. Hillebrandi, Spec. riov. Monoicum, tenellum, caespitibus intricatis conden- 



. satis sericeo-lutescentibus. Caulis erectus, plicatus, irregulariter subfascicu- 

 latim ramosus cum ramis undique divergeutibus radiculosis. Folia laxe im- 

 bricata subsecunda, e basi ovata, sensim lanceolato-acuminata, concava, 

 basim tantum piano reflexa, toto margine serrulata, costa medio vel paulo 

 ultra evanida, areolatione angusta elongato-polygona, angulis dilatata, quad- 

 rato chlorophyllosa. Perichsetialia pellucida, laxe areolata, plerumque 

 enervia, e basi ovata, sensim in acumine longo, gracili erecto vel flexuoso sub- 

 integro attenuata. Capsula in pedicello breviusculo inferne rubello subru- 

 goso, superne pallido kevi, brevis, turgide ovata, oequalis, erecto raro in- 

 clinata, sicca ore dilitata, operculo conico brevi obtuso truucato. Peristomii 

 externi dentes longiores inferne pallide lutei, superne albidi, processus 

 tenerrimi pellucidi dentibus perforatis ciliis duobus articulatis interpositis ; 

 annulus ? 



E (33) 



