CoKER: NortH AMERICAN SPECIES OF ENCALYPTA 443 
Diplolepideae 
5. ENCALYPTA APOPHYSATA Nees & Hornsch. Bryol. Germ. 2: 
49. 1827 
Encalypta Macounii Aust. Bot. Gaz. 2:97. 1877. 
Encalypta leiocarpa Kindb. Bull. Torrey Club 17: 273. 1890. 
Plants 1.5-2 cm. high; leaves 3-4 mm. long by 1 mm. wide, 
carinate, lingulate; costa ending in the blunt apex or rarely excur- 
rent into a short mucronate point, densely papillose on both surfaces 
with coarse spinose teeth on dorsal apex; margins revolute above; 
cells of upper blade 8—10u, irregular, those of the hyaline base 
50-60 long by 8-1ou wide with the end walls thickened, with 
papillose projections; perichaetial leaves slightly broader. Monoi- 
cous. Seta 10-12 mm. long, smooth; calyptra 6-7 mm. long by 
Imm. wide, very scabrous at apex, papillose over the entire sur- 
face, basal fringe sometimes fugacious, cells of fringe narrow; lid 
about 2 mm. high; capsule 2-3 mm. long by 0.5 mm. wide, not 
striate, neck apophysate when dry or when wet long and tapering; 
annulus of 2-3 rows of cells, more or less persistent; mouth bor- 
dered by 3-4 rows of small thick-walled hexagonal cells; peristome 
obscurely double; teeth slender, very papillose, perforate, rarely 
bifid, inner peristome white, papillose, adhering closely and almost 
invisibly to the outer; spores 18-24, finely papillose, maturing 
in summer. 
TYPE LOCALITY: European. 
DistripuTION: Rocky Mountains of British Columbia to Mon- 
tana; and (according to Paris Index) Scoresby Straits, Arctic 
America. Also Europe and Asia. 
ILLustRaTIoNs: Bryol. Eur. pl. 201. 1838; Limpricht, Laubm. 
a: fj. 287. 180. 
ExsiccataE: None. Drummond, Musci Am. 50, is E. lact- 
niata; so are many of the specimens cited in Macoun’s Catalogue 
(37) for E. Macounii. The American specimens of this species 
seem to have the leaves more often blunt than is usual in the 
European ones, though Limpricht (39) describes them as obtuse 
or short-pointed. The type specimens of E. Macounii in Austin’s 
herbarium are immature and no spores were formed, but in all 
other characters they agree with E. apophysata. The description 
of E. leiocarpa is erroneous in two important characters, for the 
calyptra is fringed and the peristome is double. 
