- 48 - 



cells less numerous and less obscure, and less chlorophyllose. Capsule 

 smaller. Peristome normal. 



Minnesota: Without locality or name of collector, mixed with a small 

 form of Hypnum uncinatui7i, Hedw. (Herb. Univ. of Wisconsin). 

 PsEUDOLESKEA PATENS Llmpr. Laubm. 2:8o6. (Leskea ? patens Lindb. in 



Soc. pro Fauna et Fl. fenn. 1880. Lesquereuxia patens Lindb. in 



Meddel. af Soc. pro Fauna et Fl. fenn. 14:75. 1887. 



Newfoundland: Deer Lake (Rev. A. C. Waghorn). 



This species differs from P. atrovirens in its more slender stems, the 

 leaves erecto-patent (not secund), symmetric (not falcate), and the papillae 

 being set on the middle of the cells and not on the angles. 

 Tripterocladium leucocladium (C, Muell.) Jaeg. var. camptocarpum Card. 



& Ther. 



Differs from the typical form only in the short, subhorizohtal arcuate 

 capsule resembling that of Brachythecium. 



Idaho: Latah County (L. F. Henderson, 1894). 

 Amblystegium serpens Br. Eur. var. subenerve Ren. & Card. 



Differs from other small forms of A. serpens in the leaves which are 

 either costate or ecostate. Distinguished from A. subtile by the more robust 

 habit, much larger and broader leaves with shorter acumen. 



Newfoundland: Bay-of-Islands (Rev. A. C. Waghorn). 

 Amblystegium fluviatile Br, Eur. var. brevifolium Ren. & Card. 



Distinguished from the typical Euro^jean form by the more regularly 

 pinnate branches, shorter and smaller leaves and a costa thicker in propor- 

 tion to the size of the leaf. 



Minnesota; Lanesboro (J, M. Holzinger, 1894. Ren. & Card., Musci 

 Amer. Sept. exsicc. no. 327). 



Amblystegium riparium Br. Eur. var. longiverve Card. & Ther. 



Distinguished from the typical form by the costa extending farther into 

 the acumen. 



Arkansas: Varner, in water (B. F. Bush, 1898). 



Resembles A. vacillans SuU. in the long-nerved leaves, but in this 

 species the branch leaves have a short obtuse acumen, while in our moss 

 they are narrowly and acutely acuminate, like the stem leaves. 

 Hypnum Halleri Linn. fil. apud Swartz Meth. Muse. 34. 



Labrador: L' Anse-au-Mort (Waghorn, 1894) Cook's Brook (Waghorn, 

 1897). Newfoundland: Middle Arm, on rocks (Waghorn, 1896). 



A very distinct species of the subgenus Campy Hum, at once character- 

 ized by the very dense tufts, the stems entirely prostrate and divided into 

 pinnate branches, the leaves much crowded, recurved-squarrose from a more 

 erect base, minutely denticulate all around, and with a much shorter point 

 than in the allied species. 



Hypnum cupressiforme L. var. resupinatum Sch. CoroU. 133. (H. resupina- 

 tum Wils., Bryol. Brit. 398). 



Newfoundland: Chance Cove (Rev. A. C. Waghorn, 1891). 



This variety considered by many authors as a distinct species is charac 



