168 
Gametophyte in wide loose glossy yellow-green mats ; stems 5 
cm. or more long, decumbent or ascending, often stoloniferous at 
the ends, subpinnately branching; branches 5-10 mm. long; 
-branch leaves equally spreading to somewhat falcate-secund, 
lanceolate to ovate-lanceolate, 1.4—2 X 0.4~-0.6 mm. long-acumi- 
nate, strongly serrate above, concave, costate to the middle or 
beyond; median cells linear-vermicular 10—12:1; basal cells 
shorter and broader; alar quadrate ; stem leaves ovate-lanceolate, 
less strongly serrate, long subfiliform acuminate, 2 X 0.6—1.1 mm., 
strongly plicate: monoicous; male branches borne on the stem, 
gemmiform ; antheridia oblong-cylindric; paraphyses very long 
and numerous ; perigonial leaves ovate, acuminate : perichaetium 
2—2.5 mm. long; leaves sheathing at base, with squarrose points ; 
inner leaves oblong-lanceolate, rather abruptly narrowed into a 
long filiform serrate acumination, costate. Sporophyte 1—2 cm. 
high; seta red when young, red-brown when old, more or less 
roughened with rather low distinct papillae, nearly smooth below ; 
capsule red-brown, 2.5-3 mm., 3: I, unsymmetric and inclined ; 
operculum long-conic, apiculate ; annulus narrow, usually adher- 
ing to the operculum; cilia 1 or 2, long, nodose and papillose- 
roughened ; spores roughened, 155, maturing in autumn. 
Type locality European. 
On damp earth and stones, in woods and in damp grassy 
places. Apparently has the range of B. salebrosum. As yet no 
specimens have been reported from farther south than New Jersey. 
Quesnell, B. C. (Macoun). 
ILLUSTRATIONS.— Br. & Sch. l. c. ; Husnot, Musc. Gall. A. 92. 
ExsiccATI.—Aust. Musc. Appal. 314-315. 
` Scarcely to be distinguished from B. sa/ebrosum except by the 
slightly scabrous seta, rather longer capsule and longer acuminate 
leaves. There are all grades of roughness of seta and it is doubt- 
ful if this species is more than a variety of P. salebrosum. B. oxy- 
dadon, D. flexicaule, B. salebrosum, B. acutum and B. campestre 
grade into each other and are difficult to separate satisfactorily. 
4. BRAcHvTHECIUM RoTEANUM DeNot. Cronaca, 2: 19. 1867; 
Epil. 117. 1869. 
Brachythecium salebrosum var. cylindricum Br. & Sch. Bryol. 
Eur. fasc. 52-54. pl. 550. 1853. 
