86 A MANUAL OF MOSSES 



Pennsylvania and in Ohio but has not yet been found in 

 \\'estern Pennsylvania. 



10. Fissidens subbasilaris Hedwig. 

 (Plate XII) 



Cespitose in wide mats, 5-10 mm. high, erect or ascend- 

 ing, green, brownish tomentulose at base: stems branching at 

 base; leaves usually in 10-18 pairs, crisped when dry, widely 

 spreading to ascending, close, imbricate, those in middle of 

 stem often largest, the largest reaching about 1.5 mm., the 

 sheath reaching about three-fifths the length of the leaf, leaf 

 oblong, rather obtuse, but apiculate with a pointed cell, non- 

 bordered, minutely crenulate below, irregularly serrate above, 

 the inferior lamina ceasing abruptly at the base; leaf-cells 

 incrassate, and rather obscure, small, about .007-.012 mm., 

 roundish-hexagonal ; the costa ending considerably below the 

 apex : seta smooth, arising from basal part of stem, ascending, 

 usually about 3-5 mm. long and reaching about to the top of 

 stem, light chestnut-color; capsule cylindric-oval, about 1.5 

 mm. long, smooth, chestnut-color to dark brown, tapering at 

 base, erect or very nearly so ; calyptra narrowly cucullate ; 

 operculum conic, obliquelj' rostrate to about one-half the length 

 of capsule ; peristome rich chestnut-color, strongly trabeculate, 

 not papillose, the teeth slightly inserted, bifid to about the 

 middle into two slender prongs ; spores smooth, pale yellowish 

 pellucid, round, about .016-.018 mm. in diameter. Mature in 

 late autumn. 



On earth and on rocks and bases of trees, Ontario and 

 southwards through our Eastern States. 



Allegheny : On base of white oak, Douthett, December 

 29, 1908 (Figured), and Keown, November 

 14, 1909. O. E. J. 



Fayette : Base of rotten stump, Ohio Pyle, Septem- 



ber 1-3, 1906. O. E. J. and G. K. J. 



McKean : Quintuple, at base of old tree, April 18, 



1900. D. A. B. 



Indiana and ^^'estmoreland : James. (Porter's Catalogue.) 



3. OCrODICBRAS Bridel. 

 {Conomiirium Montague). 

 Plants slender, fasciculately branching, floating, filiform : 

 leaves remote, lance-linear, short-auriculate : flowers monoi- 

 cous, the male axillary, the female on elongated branchlets ; 

 seta short ; capsule thin-walled, erect, very small, without 

 stomata ; calyptra minute, conic, undivided, covering only the 

 rostrum of the operculum ; operculum cotiic-rostrate ; peris- 

 tome-teeth variously laciniate or entire and evidently de- 

 generate ; annulus none ; spores about .018-.025 mm. 



