﻿North American Eurhyxchia ' 225 



3. ClRRlPHYLLUM PILIFERUM (Schreb.). 



Hypnum piliferum Schreb, Spicil. Flor. Lips. 91. 1771. 

 Eurhynchium piliferum Br. & Sch. Bryol. Eur. fasc. 57—61, 



pl. 53 1 - 1854. 



RJiynchostegium piliferum De Not. Cronaca, 2: II. 1867. 

 Bracliytliecium piliferum Kindb. Can. Rec. Sci. 1894: 73. 



1894. 



Gametophyte in wide loose mats, glossy, bright yellowish- 

 green ; stems long, sometimes reaching 20 cm., creeping, irregu- 

 larly divided, pinnately branching, sparingly radiculose ; branches 

 rather distant, 10-15 mm. long, terete -foliate ; branch leaves loosely 

 erect, imbricate, decurrent, ovate, very concave and spoon-shaped, 

 the rounded apex abruptly narrowed into a long, filiform acumin- 

 ation ; 1.2 x 0.8 mm., smaller near ends of branches ; acumination 

 one-half length of the body of leaf, apex cucullate, margins strongly 

 serrate, more nearly or quite entire at base, costa fully two-thirds 

 length of body of leaf ; median leaf-cells linear, 10-1 5x1; alar cells 

 abruptly enlarged and inflated ; stem leaves larger and more broadly 

 ovate, 1.5-2 x 1 mm. (2-2.5 x 1-1. 2 mm. according to Limpricht), 

 enlarged and inflated alar cells more numerous : dioicous ; male 

 plants somewhat smaller ; perigonial leaves ovate, long-acuminate, 

 ecostate ; perichaetium sheathing, the leaves ovate, somewhat ab- 

 ruptly narrowed to a very long slender erect-spreading acumina- 

 tion, somewhat serrulate, ecostate or some of the inner slightly cos- 

 tate. Sporophyte 2-3 cm. high ; seta dark red-brown, twisted to 



the right, very 



capsule red-brown, 



inclined to horizontal, oblong-ovoid, arcuate; urn 2.5 mm. 

 long, 2-3 : 1 ; operculum nearly as long as the urn, long rostrate 

 from a conic base ; annulus of at least two rows of cells, detach- 

 able ; teeth of peristome very slender pointed, very strongly papil- 

 lose-roughened above ; segments nearly or quite as long as the 

 teeth, slender, split between the articulations ; cilia 2 or 3, long 

 and very slender, nodose to subappendiculate ; spores smooth, 

 12-16 fi, maturing in winter or early spring ; sporophyte rare. 



Type locality, European. 



On the ground and base of trees in woods and shady meadows, 



most 



closely interwoven with other mosses ; New Brunswick, J 



New Hampshire, James ; Vermont 

 C. Howe, Peck ; New Jersey, Austi 

 Burnett ; Ohio, Sullivant ; Washing 



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