THE EUROPEAN SPHAGNACEE 811 
Wood-cylinder thick, Laer or yellowish 
Stem-cortex absent or in 2-4 layers, 3, which are clearly differen- 
tiated from the wood- Gunite er, and are formed of more or less 
thick- se 4 non-porose cells. 
e es large, bent backwards along the stem, triangular- 
lingulate ta Tisiatas fimbriate and deeply cleft at the rounded 
apex by re was pene of the epee wide hyaline cells ; border 
broad, much w below ; always non-fibri 
aa cles sa tino distant, bed e?: closer, of 4-5 branches ; 
spreading apres long to Sle oe or shorter, either drepano-, 
h no- to ortho-clado 
Branch- ped ie Saou. pone lanceolate, long and narrowly 
minate; finely toothed:at the narrowly truncate apex ; margin 
inrolled only at the apex; border narrow; when dry more or less 
undulate and ‘oge3 slightly recurved apex; metallic lustre less 
marked than in S. Lindbergii. Inner surface in the apical half 
other with large or small non-bordered pores, in part in the cell- 
Ree that of S. obtusum. Membrane-gaps in the upper cll 
angles of the leaves of the pendent branches always numerous, a 
equal to one-third to one-half the cell-wall in extent ; Rcndesity 3 in 
the whole at half of the leaf with larger or smaller non- bordered 
pores, which have often a very indistinct outline. 
Chlorophyllose cells in section generally parallel-trapezoid, more 
rarely triangular, inserted between the hyaline cells on the outer 
surface of the leaf and here fr 
n 
which are . non- fibrillose and non-por 
Hab. Most frequent in deep moodent “pools. frequently sub- 
merged, but sometimes also in drier habi 
istrib. Kurope; Austria, Germany, musty Finland, Lapland, 
Ropndinasiay Denmark, France, Britain (?); Asia; North ge weer 
ery numerous forms of S. riparium are grouped by Rus 
in rete Naturk. Liv. Est, & Kurl. Ser. ii. Bd. x. Lief. 4, 1804, 
