Jennings: Manual of Mosses — 34. Brachytheciaceae 291 



annulus none; peristome parts of about equal length, hynoid, the ciha some- 

 what appendiculate, usually 2 in number; spores mature in fall. 



On earth, rocks, roots and bases of trees, in woods, but not so frequently 

 occurring on rotten logs as do some of the other species. From eastern Can- 

 ada to Tennessee and westward. 



Erie Co.: Entrance to Lily Pond, among trees. Presque Isle, July 13, 1925 and Sand 

 Bank Trail, July 25, 1925, Nelle Amnions, Washington Co,: On decayed wood near 

 Washington. Oct. 3, and 21 (figured), 1891. A Linn and J. S. Simonton. 



2. Brachythecium campestre (Bruch) Bryologia Europaea 



{Hypniirn campestre Bruch) 



Plate LIV 



Very closely resembling B. salebrosum, but differing in having the seta 

 smooth at base and slightly rough above; the capsule longer and the leaves 

 longer-acuminate. Otherwise the characters are as given for B. salebrosum. 



On moist earth, often in grassy places, rocks, or on rotten logs, usually 

 preferring a non-calcareous habitat. Spores mature in autumn or early winter. 

 Europe, Asia, northern Africa, and, in North America from Canada to the 

 northern United States and south to Pennsylvania and New Jersey. 



Infrequent in our region. Allegheny Co.: Darlington Hollow, Sharpsburg, Octo- 

 ber 25, 1908, and Power's Run, on shaded rock. November 30, 1909 (figured). O.E.J. 

 Fayette Co.: Ohio Pyle, along Meadow Run Valley, four miles south of village, Sep- 

 tember 1-3, 1906. O.E.J, and G.K.J. McKean Co.: Bennett Brook, August 26, 1894, 

 and Quintuple, September 9, 1896. D.A.B. Both near Bradford. 



3. Brachythecium salebrosum [Hoffmann] Bryologia Europaea 



{Hypnum salebrosum Hoffmann) 

 Plate LIV 



Widely cespitose in glossy, dark yellow-green mats: stems usually 5 or 6 

 cm or more long, creeping and irregularly branching; stem-leaves lance-ovate, 

 about 1.5-2.5x0.6-1.1 mm, in our region apparently somewhat smaller than 

 most descriptions call for; branch-leaves similar, lanceolate, about 1.8-2.2x0.5- 

 0.6 mm, abruptly slenderly acuminate, serrate above, entire or sub-serrulate 

 below, concave, the lower margins narrowly reflexed, the narrow insertion 

 decurrent, both kinds of leaves plicate and erect-spreading; costa thin, usually 

 reaching to the middle or a little above; median leaf -cells linear-fusiform, flexu- 

 cus, about 8-12:1, the basal shorter and broader, usually two or three rows of 

 lax, rather large, oblong or sub-quadrate cells across the whole base of the leaf, 

 the alar more numerous, lax, sub-quadrate, rather thin-walled, the alae quite 

 strongly decurrent; perichaetial leaves filiform-acuminate, ecostste or nearly so: 

 seta smooth, castaneous, about 2-2.5 cm long, flexuous, flattened and twisted 

 when dry; capsule oblong-ovoid, dorsallv turgid, inclined to horizontal, usually 

 arcuate, about 2-3:1, castaneous, the urn about 2-2.5 mm long; the lid conic- 

 acuminate, about 1 mm long; annulus narrow; e.^othecial cells rounded-quad- 

 rate at the rim, larger and irregularly oblong or elliptic below, all strongly 



