460 Proceedings of ike Royal Irish Academy » 
Hab. Rocks near Killarney (Dr. "Wade), Muscol. Hib« "On decayed 
leaves, impacted with earth, in a shady situation to the south 
of Purple Slountain, Killarney, in its capsular state in July ;" 
Wade, in Plant. Ptar. p. 97 ; reprinted from Dublin Society 
Transactions, vol. iv. (1804). This is all that is known of its 
occurrence in Ireland. 
77. DiPHYsciuM. Weber etMohr. 
Calyptra small, mitriform, membranaceous, sharply conic. Capsule 
large, ovate-oblique, gibbous, immersed; lid conical, acuminate. 
Peristome single, of 16 rudimentary teeth, inerassated at the 
angles, cohering into a plicate cone ; annulus simple, imperfect, 
deciduous. Leaves Ungulate, spreading, thick, and rather suc- 
culent, costate, ciliated towards the apex ; areolation dense and 
opaque. Inflorescence dioicous ; male flowers gemmiform. 
1. B. foliosum (Web. et Mohr). Bot. Taschenb., p. 377, tab. 
11, fig. 4. Bryol. Brit., p. 201, tab. 8. Bryol. Europ., 
vol. IV. Monogr., p. 3, tab. 428. Schimp., Synops. Mus- 
cor., p. 451. MuscoL Brit., Ed. 2, p. 32. Eabenhor., 
Bryothec. Europ., ]^o. 112. 
Hab. Moist banks near Dunkerron, Taylor, in PL Hib. ; roadside 
near Maam Hotel, Connemara, and on most of the mountains 
in that neighbourhood. South-west and west of Ireland. 
Tribe 18. SPHAGjN^E^. 
78. Sphagnum. Dillenius. 
Calyptra irregularly rupturing in the middle, covering nearly all 
the ripe capsule, the lower portion of the ruptured calyp- 
tra persistent. Capsule sub- globose, sessile on the pedicellate 
vaginula; lid plane-convex. Peristome wanting. Leaves five- 
ranked, those on the stem diff'ering from the branch-leaves, 
both in form and arrangement ; stem-leaves broadly ovate, 
linear-lanceolate, concave, nerveless ; in most cases beautifully 
reticulated, composed of two kinds of cellules, the one lined 
with spiral or annular filaments, and perforated; the other 
smaller, linear, without pores, and filled with chlorophyll, form- 
ing the angular serpentine network of the leaf. Inflorescence 
monoicous or dioicous, antheridia roundish and pedicellate, placed 
singly in the axils of the perigonial leaves at the clavate extremi- 
ties of short branches. 
Soft pale-coloured plants, flaccid when moist, unlike the typical 
mosses, and often growing in immense masses on wet bogs.. 
