COKER: NortH AMERICAN SPECIES OF ENCALYPTA 449 
walls deep orange, thickened at ends, basal margin slightly serrate; 
with 3~—4 rows of narrow cells, walls colorless and ends unthickened ; 
perichaetial leaves acuminate, tapering, with the costa percurrent 
into a long hair-point. Monoicous; seta about 1.5-2 cm., smooth, 
purple shading to orange above; calyptra 6-7 mm. long by 1.5 
mm. wide, papillose at apex, very slightly so over the entire surface, 
lacerate at base but without differentiation of cells; lid 2 mm., 
marked by ragged broken cells at base; capsule 3-4 mm. long by 
0.4 mm. wide, cylindric, slightly striate when young, marked when 
old by 8 striae, spirally twisted once or twice around the capsule; 
annulus large, compound; mouth bordered by 2 rows of small 
thick-walled quadrate cells; neck short, stomatose; peristome 
double, teeth about 0.5 mm. long, narrow, red, smooth or papillose, 
basal segments of teeth united and perforated; endostome papil- 
lose, orange, as long as the teeth, attached to a papillose basal 
membrane, the segments alternating with short cilia; spores I5~25u, 
smooth, granular inside. 
TyPE LOCALITY: European. 
DISTRIBUTION: On earth in crevices of rocks and on banks; 
Ontario to British Columbia and Alaska; the Rocky Mountains 
of Idaho and Montana; Greenland. Also northern Europe and 
Asia. 
ILLustRaTIoNs: Abh. Akad. Miinch. 1: pl. 2. 1832; Bryol. 
Eur. pl. 205. 1838; Mitt. Jour. Linn. Soc. 8: pl. 5. 1865 (as E. 
longipes). 
ExsiccaTaE: Drummond, Musci Am. 48. 1828 (as E. strep- 
tocarpa); Macoun, Can. Musci 134 (as £. Selwyni), 474 (as E. 
longipes), 491 in part (as E. cucullata), and 565 (as E. procera). 
8. ENCALYPTA CONTORTA (Wulf.) Lindb. Oefv. Sv. Vet.-Akad. 
Forh. 20: 396. 1863 
Bryum céntortum Wulf.; Jacq. Coll. 2: 236. 1788. 
Encalypta streptocarpa Hedw. Sp. Musc. 62. 1801. 
Leersia contorta Lindb. Musci Scand. 19. 1879. 
Plants 2-4 cm. high; leaves spreading when dry, 5-6 mm. long 
by 1.5 mm. wide; apical blade lingulate, carinate; apex tapering 
to the blunt point; costa ending below the apex, very papillose 
on both surfaces, scabrous on back at basal portion; margins 
plane; upper cells 12-16 in diameter, round, those of the hyaline 
base, 40-48 long by 16 wide, not papillose; walls deep orange, 
slightly thickened at angles, basal margins bordered by 2-3 rows 
