CoKER: NORTH AMERICAN SPECIES OF ENCALYPTA 439 
ExsiccaTAE: Macoun, Can. Musci gor (as E. cucullata); 
Holz. Musci Acro. Bor. Am. 214. 1906. 
Ia. ENCALYPTA EXTINCTORIA APICULATA Wahl. Fl. Lapp. 344. 1812 
Costa usually excurrent into a short hair-point; capsule when 
mature striate and somewhat ribbed. 
DISTRIBUTION: Colorado, Montana, and Assiniboia. Also 
Europe. 
tb. ENCALYPTA EXTINCTORIA MuUTICA Brid. Musc. Recent. Suppl. 
4: 28. 1819 
Costa disappearing far below the blunt apex; mature capsule 
ribbed. 
DistriguTION: Colorado to British Columbia. Also Europe. 
2. ENCALYPTA RHABDOCARPA Schwaegr. Suppl. 1: 56. 1811 
Leersia rhabdocarpa Lindb. Musci Scand. 26. 1879. 
Encalypta rhabdocarpa var. leiomtira Kindb. Ottawa Nat. 4: 61. 
1890. 
Encalypta subspathulata C. Mill. & Kindb.; Macoun, Cat.: Can. 
Fi.6: 0%. <1802. 
Encalypta leiomitra Kindb.; Macoun, Cat. Can. Pl. 6:94. 1892. 
Plants 1.5-2 cm. high; leaves 3-4 mm. by 0.66-I mm. wide, 
lingulate, flat and spreading when moist; costa extending beyond 
the suddenly contracted apex of leaf into a long mucronate hair- 
orange, not thickened, with a distinct marginal border of 6-8 
rows of cells, 60n long by 6—10p wide; perichaetial leaves smaller 
and tapering to a hair-point. Monoicous; seta 6-8 mm., orange, 
not twisted; calyptra entire or ragged at base, papillose at apex 
and sometimes to about the middle; lid about 2 mm.; capsule 
2-3 mm. long by 1 mm. wide, cylindric, striate, each ridge of 
about 5-6 rows of cells; annulus simple; rim of the mouth marked 
red, deeply wrinkled with large loose cells; peristome usually pres- 
ent, single, of 16 red, finely striate, papillose teeth, with 4-5 seg- 
ments, and occasionally with a narrow lateral preperistome cov- 
ering 1-2 segments at base of the teeth; spores 40-50u in diameter, 
very rough with large granular warts, ripe in late spring. 
