THE EUROPEAN SPHAGNACEA 423 
section, but sometimes occurring in say robust forms, resembling 
in habit S. centrale and S. cymbifolium 
Stem sometimes thin, sometimes more robust, generally of a 
dash colour. Cortex of 3-4, rarely : bes ers. Superfici al cells the 
mallest ; inner cortical cells with very numerous fibrils which are 
aes close together. grees eal pouaialle with few fibrils, 
and with 1-7, generally 2-5 por 
Fascicles poe of four beatolien which, with the exception 
of those of t apitulum, have the leaves in most cases loosely 
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very rarely brachy- or macro-cladous, eury-, dasy-, kata-, h 
ano-, to ortho-cladous, frequently oxycladous, sometimes relatively © 
very thin and fine (leptocladous). gorse cells of the branches 
with numerous fibrils; cross-walls n ent downwards as in 
8. penton tcense, but sometimes curved or highly oblique. 
anch- lain ovate to broadly ovate, near the apex of the 
betes narrowly ovate, 1: (1:4-2°5) mm. long; at the apex 
e e 
absent; the leaves of the pendent branches with a broader border. 
Fibrils "generally numerous, and pores in the upper half of the leaf 
inner surface in the u upper ha a of the leaf few, “generally only a 
single large round pore in the apical part of each hyaline cell, 
sometimes, however, 1-5 in each cell. In the lower part of the 
leaf, near the lateral margins, pores more numerous, and frequently 
nce only here and t 
for a short distance. Not rarely, and especially near the apex 
of the leaf, the chlorophyllose cells are free on the inner surface, 
and are then trapez 
Stem-leaves _Hogulate ene eer! much smaller than 
me branch-le 1-2 mm. (‘8 to 1:8) long, sometimes wider, 
very numerous fibrils and p Hyaline cells in the entire or in 
nearly the entire leaf septate, frequently with two or three crogs- 
walls, 
Dioicous; perichetial bracts somewhat secund, in the upper 
one-third closely fimbriate all round, non-fibrillose, with irregular 
