﻿240 Grout : A Revision of the 



Bor.-Am. (Ed. i) 292, in part, (Ed. 2) 431, in part; Aust. Muse, 

 Appal. 332 ; Macoun, Can. Muse. 295. 



The great majority of plants from eastern North America that 

 have been referred to E. strigosum belong to this variety. Forms 

 agreeing very closely with European E. strigosum are not rare in 

 the United States and Canada, and are seemingly more frequent in 

 elevated regions. Intergrading forms are very numerous, diversi- 

 fied, and extremely puzzling. 



2b. Eurhynchium strigosum praecox (Hedw.) Husnot, Muse 



Gall. 332. 1893. 



Hyp mini p 



pi. 64. 1 80 1. 



Gamctophyte caespitose or in looser intricate mats, green to 

 yellow-green ; stems creeping, 2-3 or even 8 cm. long, irregularh 

 divided, subfasciculately branching, often stoloniferous ; branches 

 1-6 mm. long, erect, julaceous, usually blunt; branch leaves 

 crowded, imbricate -appressed when dry, erect-open when moist, 

 cordate-ovate, more or less decurrent, 0.5-0.8 x 0.4-0.6 mm., al- 

 most acute to very obtuse and rounded at apex, serrate above, 

 serrulate nearly to the base, more or less plicate, concave with 

 borders often reflexed below; costa extending at least three-fourths 

 the length of the leaf, ending in a spine underneath ; median cells 

 hnear-oblong, 6-8 : 1 ; quadrate and oval alar cells numerous, 

 apical cells rhomboidal to nearly circular ; leaves of the stolons 

 much as in E. strigosum ; stem leaves acute to abruptly filiform- 

 acuminate, triangular-ovate, decurrent, 0.8-1 x 0.6 mm., serrulate, 

 costate to the middle. Sporophytc 6-10 mm. high ; capsule ovoid, 

 unsymmetnc, horizontal ; urn 1.5-2 : 1, more or less contracted 

 under the mouth when dry and empty; operculum two-thirds length 

 of urn, convex, abruptly long-rostrate ; cilia 1-3, stronglv nodose; 

 spores very finely roughened, about 12 u, maturing inYutumn. 



'• More depauperate than the species, tufts loose, deep green; 

 stems shortened, thick and nearly naked ; branches and branchlets 

 erect, 3-5 mm. long ; stem leaves 0.7 mm. long by 0.4 mm. broad, 

 plicate ; branch leaves close, appressed-imbricate, broadlv ovate, 

 short acummate, 0.6 mm. long by 0.3 mm. broad, margins some- 

 what reflexed above the middle, plicate ; the upper branch leaves 

 sometimes obtuse; leaf-cells 6 n long, 10: 1, elongated in the 

 acummation ; costa extending three-fourths the length of the leaf, 

 ending in a spine on the under side. Sporophyte like the species ; 

 seldom fruiting." Limpricht, Rab. Krypt El 4* • 159 1897. 



