Moore — On the llosses of Ireland. 
457 
Stems elongated, branched, leaves erect- 
patent, lanceolate ; capsule without 
an apophysis, . . . .^^ . 2. P. urnigerfm. 
aa. Stems not branched at apex. 
Stem short, slightly branched, leaves firm, 
sheathing at the base, lauceolate, ser- 
rate at apex ; columella cylindrical, 
not winged, 3. P. subrotfndum. 
Stems rather short ; leaves linear-lanceolate, 
obtuse, serrate at the margins and back, 
capsule cylindrical ; columella winged, 4. P. nanum. 
1. P. alpinum (Rohl.). Deutschl. Fl., Ed. 3, p. 59. Bryol. Europ., 
vol. IV. Monogr., p. 9, tab. 418. Bryol. Brit., p. 207, tab. 11, 
fig. a. Engl. Bot., tab. 1905. Muscol. Brit, Ed. 2, p. 48. Ea- 
benhor., Bryothec. Europ., No. 284. Polytrichum alpinum. 
Linn., Sp. PL, p. 1109. 
Hab. Eissures of rocks, on high mountains. Brandon, Kerry; Lug- 
naquillia, "Wicklow; Sawel, Derry. 
2. P. urnigerum (BTidieV). Bryol. Univ. 2, p. 124. Bryol. Europ., 
vol. IV. Monogr., p. 8, tab. 417. Engl. Bot., tab. 1218. Bryol. 
Brit., p. 207, tab. 11, fig. h. Polytrichum urnigerum. Linn., Sp. 
PL, p. 1109. 
Hab. Moist banks, in mountainous parts of the country. Glen- 
malur, Wicklow; Graltee-more, Tipperary; Brandon, Kerry, 
&c. iN'ot unfrequent. 
3. P. siibrotundum (Lindberg), in Hartm. Skand. EL, Ed. 2, p. 44. 
Bryol. Europ., vol. iv. Monogr., p. 5, tab. 7. Bryol. Brit., 
p. 206, tab. 11, fig. c. Engl. Bot., tab. 1624 et 1625. Poly- 
trichum subrotundum. Huds. El. AngL, Ed. 1, p. 400. Tur- 
ner, Muse. Hib., p. 89. 
Hab. Banks, tops of earthy mounds and ditches. Howth, Dublin ; 
Lough Bray, Wicklow ; JN'ephin, Mayo ; Tor Head, Antrim, 
&c. 
4. P. nmium (Weiss). PL Crypt. EL Gott., p. 173. Bryol. Europ., 
voL IV. Monogr., p. 5, tab. 8. Engl. Bot., tab. 1649 and 1939. 
BryoL Brit., tab. 11, fig. d. Polytrichum subrotundum, var 
/3. Huds. EL AngL, Ed. 1, p. 400. P. aloides, Hedw., Stirp. 
Crypt. 1, p. 37. P. Dicksoni, Turn., Muse. Hib., p. 90. 
R. I. A. PUOC. — VOL. I., SER. II., SCIENCE. 
