422 Roll, Vorläufige Mittheilnngen. 



Patria. Washington: ad ostium fluminis Columbia 15. Julio t888\- 



Succulis viridissimi8 mollissimis flaccidissimis foliisque cucullato- 

 obtusatis raptim distinguitur. 



Neckera Menziesii Drum. var. limnobifoides Ren. et Card. Habitu 

 Hypno (Limnobio) molli vel dilatato simile. Caespites nigro- 

 rufescentes. Folia laevia, vel vix undulata, breviora, integra vet 

 superne obsolete denticulata, obtusa vel apiculata, rete laxiore, costa 

 ad medium vel ultra producta. — Cascades: Oregon r Mt. Hood. 



Camptothecium lutescens Huds. var. occidentale Ren. et Card, 

 var. n. Forma robusta, ramis valde serieeis, Capsula angustiore,. 

 longiore. 



Washington : Enumclaw. 



Camptothecium dolosum Ren. et Card, subsp. n. A. C. aeneo 

 diflfert: foliis rameis brevioribus latioribusque, nervo plerumque apice 

 dilatato et denticulato, foliis perichaetialibus internis, apice subito 

 truncatis, laceratis vel grosse inciso-dentatis, pedicelloque asperrimo.. 

 — Cascades: Easton (Washington). 



Brachythecium laetum Brid. 



var. fallax Ren. et Card. A forma typica diftert: ramis julaceis^ 

 elongatis, foliis angustioribus, longius acuminatis, plus minus revo- 

 lutis, cellulis alaribus mollibus, haud incrassatis. 



Indiana: Hobart, Calumet River. 



var. Roellii Ren. et Card. Caulis depressus, pinnatus, ramis 

 julaeeis, brevibus, obtusis; folia dense imbricata, latiora, coneava, 

 breviter acuminata, cellulis alaribus ut in var. praecedente. 



Indiana: Hobart, Calumet River. 



var. pseudo-acuminatum Ren. et Card. Forma graeiüs r habitu 

 B. acuminato omnino similis, sed ab illo foliis magis plieatis, bast 

 excavatis cellulisque alaribus minus numerosis distineta. 



Indiana: Hobart. 



Brachythecium albicans Neck. var. occidentale Ren. et Card. 

 Forma caulibus depressis, gracilibus, laxe foliosis, foliis subseeundis^ 

 minus longe acuminatis, interdum denticulatis valde distineta. — 

 Cascades: Washington, Easton, Kahchess Lake. Rocky Mountains t 

 St. Ignatius (Montana). 



Brachythecium reßcxum Stark, var. l'acificum Ren. et Card. 

 A forma typica differt: statura robustiore foliisque caulinis majori- 

 bus, ovato-lanceolatis, haud triangularibus, sensim acuminatis, mar- 

 ginibus basi subrevolutis. — Cascades: Mt. Hood (Oregon). 



Brachythecium Villardi Ren. et Card. spec. n. Monoicum, 

 habitu B. salebroso simile. Caulis depressus, repens, radiculosus, 

 pinnatus, ramis ascendentibus. Folia ereeta, imbricata vel subseeunda. 

 decurrentia, ovato-lanceolata, longe et tenuiter acuminata, plicatula, 

 marginibus plus minus revolutis, integris vel in acumine obsolete 

 denticulatis, costa ad 2 /s folii producta; cellulis angustis, elongatis,. 

 linearibus, acutis, alaribus paucis , quadratis. Pedicellns scaber. 

 Cetera ignota. — Washington: Tacoma, Seattle. 



Brachythecium Roellii Ren. et Card. spec. n. Sordide velj lute- 

 scenti-viride. Caulis mollis, depressus, l s haud radiculosus, subpinnatus,- 

 ramis elongatis, flexuosis. Folia ovato-lanceolata, decurrentia, sat 



