THE EUROPEAN SPHAGNACEE “ 845 
Dioicous ; male branches in the antheridium-bearing part rust- 
red to dark brown; perigonial bracts differentiated, broadly-ovate, 
with shortly produced apex. Perichetial bracts large, broadly-ovate ; 
in the basal half formed of broad, long, rectangular chlorophyllose 
cells only, in the upper half of both kinds of cells; towards the 
lateral margin the cells become gradually narrower and form an 
walled chlorophyllose cells only; hyaline cells usually without 
fibrils and pores. Spores sulphur-coloured with membrane folds or 
rusty-brown without folds, 25 » in diameter. 
ab. Widely distributed in both lowlands and mountainous 
regions. 
Distrib. Throughout Europe; Asia; North and South America; 
Oceania. Hole Common, near Lyme Regis, Dorset (Miss Lister); 
Mallowdale Fell, W. Lancashire (Wheldon & Wilson); Loch Knock 
Islay (Gilmour) ; Cwm Moch, Merioneth (Jones ¢ Horrell). 
ery numerous varieties. have been described, of which the 
following are the most important :— 
(1) Var. amblyphyllum Warnst. in Bot. Ver. Prov. Branden. 
1890, xxxii. 216. Plants sometimes robust, sometimes delicate, 
of the cell-membrane on both surfaces and so more or less 
fimbriate, but not deeply divided; generally non-fibrillose, rarely 
which in that species are smaller with ill-defined outlines. 
Brookwood, Surrey (Sherrin); Harro 1 
Bur Common, Bucks (Sherrin) ; Artro Valley, Merionethshire 
(Jones); Worston Moor, N.E. Lancashire (Lewis). : 
ar. mucronatum Warnst. l.c. p. In size, habit, and 
colour as variable ag the var. amblyphyllum, and only differing from 
this in the stem-leay tem-leaves generally equilateral- to 
lsosceles-triangular ; in the former case acute, a itho ny 
rarely with fibrils in the upper part; in the latter case larger, 
toothed on the frequently truncate apex, and not rarely having the 
border less widened below, and the cells fibrillose to below the 
middle of the leaf. Branch-leaves sometimes strongly, sometimes 
weakly undulate, very seldom, and especially in submerged forms, 
quite rigid. Pore-formation as in var. amblyphyllum. Very common. 
Broo » Surrey (Sherrin); Oakmere, Cheshire (Wilson) ; 
Wybunbury Bog, Cheshire (Wilson); Tilgate Forest, Sussex (Horrell) ; 
Journat or Borany.—Vot. 38. [Serr. 1900.] 2B 
