278 A MANUAL OF MOSSES 



versely rounded at rim but soon becoming rather elongate 

 oblong-hexagonal or rectangular below ; spores mature in late 

 spring or early summer, brownish, medium-walled, papillose, 

 .016-.019 mm. 



On stones and earth in wet situations or in water, usually 

 in non-calcareous districts; Europe, Asia, northern Africa, and, 

 in North America, from Ontario to Missouri and North Caro- 

 lina. Common in our region. 



Allegheny : MoonTownship, May 18, 1902. J. A. S. : 



on rock in stream, Fern Hollow, Pitts- 

 1. urgh, August 22, 1906, and March 8, 1908, 

 Darlington Hollow, October 25, 1908. 

 O. E. J. 

 Bedford : In creek at base of Wills Mt., Hyndman. 



October 10. 1904. O. E. J. 

 Cambria : Cresson and Johnstown. T. P. James. 



(Porter's Catalogue). 



Fayette : Sugar-Loaf Mt., September 1-3, 1906. O. 



E. I. and G. K. J. ; Ohio Pyle, four miles 

 up Meadow Run; May 30-31, 1908. O. E. J. 



Huntingdon 

 Washington 

 Westmoreland 



1. C. Porter. (Porter's Catalogue). 

 Hanlin, May 21, 1908. O. E. T- 

 Hillside, May 23, 1908. O. E. J. (Fig- 



ured). 



2a. Hygroamblystegium tenax variety spinifolium (Schimper) 



New Combination.. 



(H. falla.v var. spinifolium Warnstorf : Amblystegium irrigunm 



var. spinifolium Schimper; A. faHa.r var. spinifolium Limp- 



richt ) . 



This variety differs from the species in being more robust, 

 with longer stems, longer and narrower leaves, the leaves 

 reaching nearly 2 mm. in length and with a strongly excurrent 

 and stout costa : Grout states the upper leaf-cells to be about 

 6-8:1, and the basal cells more lax. 



Usually in and around calcareous springs and probably 

 distributed mainly as is the species. 



Crawford : Pymatuning Swamp, Linesville, May 12, 



1908. O. E. J. 



3. Hygroamblystegium filicinum [ Linnaeus] Loeske. 



(Amblystegium filicinum DeNotaris : Stereodon filicinus Mitten; 



Hypnum compressnm Bridel). 



Variable, forming loose to dense tufts, rather rigid, bright 

 or golden yellow : stems usually densely brownish tomentose, 

 especially on the prostrate or procumbent forms, rather regu- 

 larly pinnately branched, with usually numerous oval to lanceo- 

 late, laciniate paraphyllia ; branches slender, short, stiff, non- 



