322 FRYE 
Leaves short, rather obtuse, linear-lanceolate from a broad sheath- 
ing base, patent when moist, lower ones glossy and dark colored; 
dry leaves closely imbricate, rigid, curved at apex. Margin entire, 
incurved from near base of limb, at apex cucullate, blunt. Lam- 
elle 30-50, 4-6 cells high; marginal cells larger than the others, 
ovate-conical, smooth. 
Calyptra not covering the whole of the capsule. 
Capsule erect or inclined, oval, with 6 obtuse angles, reddish 
brown; length to width about as 1 : 13; hypophysis obconic, not 
constricted above. Teeth short, unequal. Lid with rather thick 
beak. Pedicel 1.3-4 cm. long, short, rather thick.—On soil and 
rocks.—Rocky Mountain region of British Columbia; Mt. Rainier, 
Washington; Mt. Hood, Oregon; Greenland; Europe; Kamchatka 
Peninsula; Herald Island, northwest of Bering Strait. 
9. Polytrichum juniperinum Willd., in Fl. Berol. Prodr. p. 305. 
(1787). 
So named because its leaves resemble those of the juniper. 
Plants scattered, 2-10 cm. high, glaucous green; male plants more 
slender, with short leaves. Stems rarely branched, sometimes 
slightly tomentose at base. 
Leaves less crowded at top of stem than in P. piliferum, spreading 
when moist, erect when dry, long, lanceolate from an oblong base. 
Margin incurved but not so nearly meeting as in P. piliferum, en- 
tire. Lamelle 35-40, 4-7 cells high; marginal cells longer than 
wide, ovate or flask-shaped, smooth. Vein excurrent in a red den- 
tate sometimes slightly hyaline arista which is 3-13 mm. long, 
strongly toothed at back of apex, and often half way down. Peri- 
chetial leaves longer than foliage leaves, with longer arista, white 
and membraneous at edges. 
Calyptra covering capsules. 
Capsule larger than in P. piliferum, sharply 4-angled, oblong; 
hypophysis short, less distinct than in P. piliferum. Lid deep 
red, beak short. Pedicel 4-6 cm. long, shining, bright red.—On 
soil.—F rom Kotzebue Sound north of Bering Sea along the coast 
to California; Rocky Mountains; eastern North America; Green- 
land. Our most common moss in this family. 
