2G1 



ceolato-linearia, acuta, usque ad 5 mm longa, marginibus 

 parce undulatis, erectis, ex apice ultra medium sensim re- 

 raotius et obtusius denticulatis, nervo viridi, basi circa 0,2 mm 

 lato, excurrente, lamina bistratosa, cellulis chlorophyllosisj 

 rotundato-quadratis, 0,0075 — 0,01 mm, basilaribus elongatis, 

 hyalinis; bracteae perichaetii foliis similes; seta ad 1 cm 

 usque aha, pluries flexuosa, tenuis, basi c. 0,15 mm crassa, 

 lutescenti -fuscidula, laevissima ; th eca erecta, subrecta, 

 cylindrica, 2 — 2,75 mm alta, badia, nitidiuscula, striata, 

 brevicollis; annulus latus, triplex, facile revolubilis; peri- 

 etomium simplex, circa 0,57 mm altura, pallidum, tubo 

 brevissimo , dcntibus erectis, densisslme longe papillosis; 

 spori 0,012— 0,014 mm, lutei, granulati; operculum coni- 

 cum, curvatulum, obtusum, rubiginosura, circa 0,76 mm altum. 

 Calyptra et planta mascula ignotae. 



Patria, Vancouver Island, Victoria, in terra humosa 

 parce (16). 



A T. flexiseta (Bruch) Limpr. (Trichostomum 

 fie xi pes Br. eur.), mihi e descriptione et icone in Bryol. 

 eur. tantura nota, statura robustiore, operculo breviore, curva- 

 tulo et sporis paullo majoribus, granulosis difFerre videtur. 



Desmatodon cernuus (Hlib.) Br, & Scb. 

 Montana: Deer Lodge 5000' (1344). 



Barbula rubella (Hoffm.) Mitt. 



Montana: Rocky Mountains, Helena, c. fr, (1347, 1355), 



Deer Lodge, c. t'r. (1351, 1352), Ravalli, c. fr. (1253). 



Barbula unguiculata (Iluds.) Hedw- 



lUinois: Chicago, c. fr. (1738a). Indiana: Calumet River, 



Hobart, c. fr. (1764, 1768). . Wisconsin: Princeton, 

 c. fr. (1602). Minnesota: ad catarrhactam Minnehaha 

 pr. Minneapolis, c. fr, (1600). 



Barbula conVoluta Hedw, 



Wisconsin: Princeton, ster. (1601, 1604). Vancouver Is- 

 land: Victoria, c. fr, (14). 



Barbula elata Dur. et Mont. 



Oregon: Hood River, c. fr. (1010), Washington: Cas- 



caden, Enumclaw, c. fr. (330, 332), Weston, ster. (476), 

 Kahchess Lake, c. fr. (790). 



Obs. Specimina authentica hujus speciei baud vidi. 

 Specimina Roelliana cum speciminibus araericanis, ab ami- 

 cissimo J. Cardot communicatis, bene coogruunt. 



