CATALOGUE. 401 



banks, near Carson City and in the Trinity and East and West Humboldt 

 Mountains, Nevada, in the Wahsatch, and on Antelope and Stansbury Islands 

 in Salt Lake ; 4,300-8,000 feet altitude. (1,397.) 



Var. OBTDSA. Br. & Sch. On rocks in the East Humboldt Mountains, 

 Nevada ; 7,000 feet altitude. (1,398.) 



Encalypta ehabdocaepa, Schwseg. Alpine and subalpine Europe; 

 Nulato, Alaska; Davis Strait, (Taylor;) British America, (Drummond;) 

 Colorado, (Hall ;) Cascade and Rocky Mountains, (Lyall.) On a rocky slope 

 in the East Humboldt Mountains, Nevada; 7,000 feet altitude. (1,399.) 



Orthotrichum Sturmii, n. & H. Mountains of Europe ; Sandwich 

 Islands ; "White Mountains, New Hampshire ; Texas and New Mexico ; Yo- 

 semite Valley, California. On limestone rocks. West Humboldt Mountains, 

 Nevada ; 7,000 feet altitude. (1,400.) 



Orthotrichum Jamesianum, SulL, Ms. Monoicum ; pulvinulo laxiusculo 

 inferne fusciscente, superne sicco cinereo, madido pallescente-viridi ; caule 6-8 

 lineari subjulaceo-foliato ; foliis oblongis lanceolato-oblongisve valde obtusis ; 

 margine anguste revolutis, altius papillosis, costa infra apicem desinente ; cap- 

 sula immersa pyriformi sicca octo-costata sub ore amplo constricta, peristomii 

 simplicis dentibus 16 discretis basi transverse-, medio circulari-, apice longi- 

 tudinali-vermiculatis ; calyptra parcissime ramentosa. — Distinguished from O. 

 ohtusifolium, its nearest congener, by its simple peristome, leaves with revo- 

 lute margins, and its monoecious inflorescence. On limestone rocks in the 

 East Humboldt Mountains, Nevada ; 7,000 feet altitude. (1,401.) 



Orthotrichum Watsoni, James. Monoicum ; pulvinulo laxo Isete viridi 

 inferne dilute ochraceo; caule subunciali parcius diviso; foliis moUioribus 

 laxiusculis e basi erecta hyalina elongato-lanceolatis acutatis eximie arcuato- 

 recurvis, costa carinatis, toto margine revolutis celluhs superioribus puncti- 

 formibus papillosis, papillis longiusculis bi-trifurcatis ; capsula emergente 

 subelliptica sicca prominenter costatis sub ore amplissimo constricta haplo- 

 peristomata, dentibus Isevibus geminatim arete connatis apice crucigeris flaves- 

 centi-albidis 7-10 articulatis ; calyptra satis ramentosa; operculo brevius 

 rostrato. — A very distinct species, aUied to O. Texanum, SuUiv., but its color 

 is different, its leaves are broader, softer, and much more recurved, and the 

 cells of the upper half of each leaf are covered with longer and more or less 

 divided papillee. The teeth of the peristome are yellowish-white, with a 

 51 



