290 FRYE 
Leaves distant, squarrose, more or less crisped when dry, linear- 
lanceolate from a hyaline sheath-like base whose edges bear each 
3—5 long hairs, not transversely undulate, not toothed at back; 
lamina 2 cells thick. Margin not bordered, densely and sharply ser- 
rate. Lamelle 5—8, not wavy from side to side, on upper side only, 
6—8 cells high, toothed. Vein strong, percurrent. Cells round- 
hexagonal, thick-walled, .oo8 mm.; sheath-cells elongated-rectangu- 
lar, thin-walled. 
Calyptra cucullate, naked, covering only the lid. 
Capsule erect, symmetric, terete, wide mouthed, smooth, with 
large 2-celled stomates. Peristome wanting. Lid conic, with long 
beak. Pedicels single, 8—12 mm. long, reddish, flexuose when dry. 
Number of species in western North America, 1; total number spe- 
Gleseale 
1. Bartramiopsis lescurii (James) Kindb., in Rev. Bryol. 1894, 
1Do eI) 
Atrichum lescurit James, in Bull. Torr. Bot. Club. 6: 33 (1879). 
Bartramiopsis sitkana Kindb.,’ in Rev. Bryol., 1894, p. 35. 
Named after Lesquereux!? 
Plants laxly cespitose. Stems filiform, flexuous, laxly foliose, 
long naked below. : 
Leaves 4 mm. long, subvaginate at base, acuminate, 2 cells thick 
except near the margin where they are 1 cell thick, when dry very 
much crisped, when moist arcuate-spreading. Margin plane, at 
sheath-like base entire, with 3—5 hairs at edge where sheath joins 
blade, further up the hairs shorten into strong teeth. Vein broad, 
smooth at base. Cells ot sheath hyaline, width to length about as 
1:4—6. 
Calyptra glabrous, shortly acuminate. 
Capsule at first slightly ovate-cylindrical, turbinate when old, lid 
long conic, long acuminate, almost equaling the capsule. Spores 
9 Proc. Wash. Acad. Sci. 4; 326 (1902). 
10 Leo Lesquereux, 1806-1889. A noted worker in American fossil plants and in 
the mosses. With W. S. Sullivant he published ‘‘Icones Muscorum;”’ and with T. 
P. James, ‘‘ Manual of the Mosses of North America.’’ These are today two of our 
best books on North American mosses. 
