_ trees. New Jersey (Best); Pennsylvania (Porter). 
84 
large), oblong-quadrate at the basal margins, oblong-rhomboidal 
above, broadly linear along the costa; branch-leaves much smaller, 
ovate-acuminate. Dioicous; perichetial bracts rigid, the narrow 
acumen about as long as the body, serrate or with a few jagged 
teeth; capsule narrowly cylindrical, curved, horizontal; annulus 
broad, compound, operculum long conical to conic-rostrate; cilia 
~ 3 or 4; spores .OIJ to .O13 mm. 
On the ground, rotten wood and on rocks in damp shady 
places. From the Labrador (Waghorne) to British Columbia 
(Macoun) southward. Rare or absent on the Pacific slope and in 
the Gulf States. 
Type locality in Saxony, Germany. Type in the Boissier 
Herbarium, at Geneva, Switzerland! 
Irtust. Hedw. Musc. frond. p/. 35. 1791. Husnot, Musc. 
Gall. pf. 88. 1894. Lindberg, 1. c. 416. pl. 7. fig.9g. 1874. 
Exsic. Drummond, Musci. Am. no. 214. S. & L. Musc. Bor. 
Am. ed. 2, no. 404; Aust. Musc. App. no. 303; Macoun, Can. 
Muse. no. 271. 
Rem. Easily distinguished from 7: delicatulum by its spread- 
ing-recurved leaves with their /ong-celled thickened acumen and the 
absence of cilia on the perichetial bracts. In some European 
specimens the perichetial bracts are longer than those of American 
plants. 
5. Txutpium Puiviserti Limpr. 
Thuidium intermedium Philib. Rev. Bryol. 20: 33. 1893. Not 
Mitt. 1851. 
Thudium Philibert Limpr. Rab. Kryptfl. 4: 2, 835. 1895. 
Medium sized plants, yellow to dark green, in intricate mats; 
stem 4 to 8 cm. long, creeping, pinnately branched; branches pin- 
nate or bipinnate; paraphyllia multiform; stem-leaves triangular- — 
cordate-acuminate, usually with a hyaline filiform point, margins 
revolute or recurved, at least below; leaf-cells oblong-quadrate to 
oblong-rhomboidal. Dioicous; perichetial bracts loose, fexruous 
Spreading or reflexed, serrate, rarely with a few short cilia on the 
innermost, acumen about ¢#ree times as long as the short, scarcely 
costate body; capsule oblong-cylindrical, curved, horizontal; an- 
nulus narrow, indistinct, tardily or imperfectly deciduous; oper- 
culum conic-rostate, curved; spores .OI2 to .O16 mm., almost _— 
smooth, maturing in October. (Plate 260.) : 
_In wet, swampy places on the ground or the base of small 
