360 
Proceedings of the Royal Irish Academy. 
1. F.polyphyUum(Bi\ et Schimp.). Biyol. Europ., vol. m., Monogr. 
p. 4, tab. 229. Bryol. Brit., p. 173, tab. 19. De ^^otr., Briol. 
Ital., p. 721. Tridiostomum polypbyllum. Turner, Muse. Hib., 
p. 35, tab. 7. Muscol. Brit., p. 108. 
Hab. On rocks and walls through most of the counties in Ireland. 
Most abundant in the western counties, especially Conne- 
mara. 
22. EACOMiTRruM. Bruch. et Schimp. 
Capsule elliptical or sub-cylindrical, erect, long-pedicellate. Calyptra 
mitriform, papillose at the apex ; operculum rostrate. Peristome 
single, of 16 teeth, divided at the base so as to appear 32; the 
segments free or cohering in pairs. Inflorescence dioicous. Tall 
mosses for the most part, some having the stems hypnoid, more 
resembling Grimmise in appearance. 
Diagnosis of Species. 
^' Leaves terminated by a long hyaline point. 
a Hyaline point rough with erose denticulations. 
Plant of yellowish green colour, . . .I.E. cai^escens. 
Plant of greyish green colour, . . . 2. E. lanugin-osum. 
aa Hyaline point denticulated slightly. 
Cellular tissue of leaves slightly sinuous and 
quadrate, . . . . . . 3. E. heteeostichum. 
Cellular tissue more sinuous, . . . 4. E. stjdeticum. 
Leaves without diaphanous points. 
Stems dichotomous, leaves dentate at the 
Poillts, 5. E. ACICrLARE. 
Leaves bluntish, not dentate, . . . 6. R. proten-sum. 
Leaves elliptic, spreading, , . . 7. E. ellipticum:. 
Stem not dichotomous, branches short, 
male flowers lateral, .... 8. E, pascictjlaee. 
1. R. canescens (Bridel). Bryol. Tniv., 1, 208. Bryol. Brit., p. 170, 
tab. 19. De Notr., Briol. Ital., p. 672. Trichostomum canescens, 
Hedw., St. Cr., 3, tab. 3. Turner, Muscol. Hib., p. 39. Engl. 
Bot., tab. 2534. Muscol. Brit., Ed. 2, p. 106. 
Hab. Wet sandy ground among rocks and heaths in upland situa- 
tions. It varies a good deal in appearance according to the 
places where it grows, but is an easily recognised species. 
Found in most parts of Ireland. 
