OF PACIFIC COAST MOSSES. 33 



223. H. pinnatifidum, Sulliv. and Lesqx., Musci Exsicc. Amer., Ed. 2d, No. 513. Ab 



Hypno aurco affinissiino distinguitur : capsula cernua annulo majori, foliis 

 brevius liliformi acuminatis, reti multo laxiore denique inflorescentia revera 

 dioica. 



224. H. Nevadense, Spec. nov. Dioicum, laxe crespitosum, robustum, lutescente 



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

 talibus vel longioribus, irregulariter divisis, arcuato curvatis. Folia lanceo- 

 lata, sensiru brevi-acuminata, homomallo-curvata, apice minute serrata, costa 

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

 perpaucis, irregulariter 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 spraj r of Nevada and Bridal Veil Falls, Bol. 



Is distinguished from S. hdescens, Huds., by its green color, larger thick stems 

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

 avreiim; 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 Camplothecium. 



I 4. BRACHYT3ECIUM, Bryol. Eur. 



225. H. laetum, Brid. 



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

 doubtedly ascertained. 



226. H. salebrosum, Hoffm. 



Hab. Fort Colville and Pend' Oreille, Lyall. 



227. H. collinum, Sold. 



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



Valley. 



228. H. Hillebrandi, Spec. nov. Mouoicum, tenellum, caespitibus intricatis conden- 



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

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

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

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

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

 rato chloroplvyllosa. Perichaetialia pellucida, laxe areolata, plerumque 

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

 integro attenuata. Capsula in pedicello breviusculo iuferne rubello subru- 

 goso, superne pallido lsevi, brevis, turgide ovata, asqualis, erecto raro in- 

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

 extcrni dentes longiores iuferne pallide lutei, superne albidi, processus 

 tenerrimi pellucidi dentibus perforatis ciliis duobus articulatis interpositis ; 

 annulus ? 



e (33) 



