THE EUROPEAN SPHAGNACEZ 808. 
Zostera marina Li. and var. Met en ‘gee Shore of Loch 
Sween, near Kilmichael of Inverlus na Roth. With 
Ruppia nana at the head of Loch Swann 
Carex paniculata L. Near Fairy Isles, Loch Sween.—C. rostrata 
Stokes. Lochan Taynish. 
THE EUROPEAN SPHAGNACEA 
(arrer WarnstoRF) 
By E. Cuartes Horrett, F.L.S. 
(Continued from p. 258.) 
§ u. SpHacna squarRosa Schimp. p. p. 
A small section containing only two European species. Stem 
cortex ae small pores, the super Jetieiad layer on the surface 
with one, more rarely two membrane-thinnings, which are some- 
fidea 0 com pletely abbott forming true pores. deh: leaves 
generally squarrose ; hyaline cells with very large pores and more 
or less papillose on the inner wall where united to the chlorophyllose 
hi 
and free either on the outer only or on both surfaces. Stem- leaves 
large, lingulate, rounded and fimbriate above. 
12. S. squarrosum Pers. apud Schrad. in Journ. Bot. 1800, 398. 
S. teres var. squarrosum Warnst. in Die Europ. Torfm. 
Ly 
Exsice. Braithw. Sphagn. Brit. Exsicc. No. 26 (1877). 
Plants very robust, equalling S. cymbifolium in stature. Tufts 
loose, deep, glaucous-green. Stems 10-20 em. long, firm and 
id. 
rigi 
Wood-cylinder sometimes pees 9 BaneER reddish or red. 
Stem-cortex thin-walled, 2-3-lay clearly differentiated 
from the wood-cylinder. Pores be inner walls small and few, 
on the outer qartaos of the snpectictal layer with a single membrane- 
thinning on each cell, more rarely with a distinct pore. Stem-leaves 
eu ge lingulate, fimbriate on the whole of the large rounded apex ; 
membranes in the upper part resorbed on both sides, and non- 
fibrillose : ; generally more or less fibrillose ret ee near the 
base; border narrow and of equal width throug. 
Fascicles of 4-5 ramu uli, of which 2-8 are spreading, robust, and 
attenuated at the apex. Branch-leaves generally upper half 
strongly squarrose, more rarely erecto-patent or itetcate ; wide- 
ovate, concave, narrowly bordered, suddenly narrowed above into 
a lanceolate apex with inrolled margin; pores very numerous on 
Si surfaces ; on the inner surface in the upper two- thirds for the 
st part in the cell-angles, in the lower part near the lateral 
saeegiag: ; on the outer surface in the basal part with very large, 
