THE EUROPEAN SPHAGNACEX 117? 
upper half squarrose- rg ier when dry never undulate, 
the hyaline cells on both sides with agate large pores 
and not rarely bare: minute papille on the inner wall 
which is in contact with the fh pace as ells . 
10. Stem cortex from the pale, yellowish, rarely reddish ee 3 
cylinder usually not oe differentiated, with its cell- 
walls much thickened. St. 1. sometimes small, sometimes 
late, border generally much widened towards the base; 
hyaline cells with or without fibrils; br. 1. when dry 
usually undulate or crisped ; position of pores very 
various ; the hyaline cells always without papille . . 12 
1. Sphagna squarrosa Schimp. p.p. Spp. 12, 18. 
it, Plants i times almost as robust as S. cymbifolium ; br. 1. 
usually in the upper half squarrose-spreading, rarely 
et ab or imbricate. Monoicous; ¢ branches at 
smaller than those of the sterile branches, curved erecto- 
patent, in the middle part of the basal a non-fibrillose. 
i. S. squarrosum Pers. 
11. Plants about of the robustness and habit ca 8. Gir seuiell 
en 
theridium-bearing part remaining una. 
the ¢ branches differing but little in size and form from 
those of the sterile branches, but having the fibrils in the 
hyaline cells towards the base of the leaf id delicate and 
more or less incompletely developed ili. S. teres Angstr. 
§ m1. Sphagna cuspidata Schimp. Spp. 14-21. 
13. Brit. jaslooolalen shortly or longly acuminate, dentate at the 
narrowly- or widely- truncate apex (rarely also on the lateral 
margins) ; the margins near the apex, or for some distance 
down, involute; when dry not rarely more or less undulate 13 
12. Br. 1. small ovate or oblong: -ovate; apex very short, 
narrowly truncate, with s : —_ eth ; entire margin 
undulate or crispe 
ge oe ee xxi. S. esr Bruch. 
13. St. I. broader above, spatulate, oti fimbriate on the 
broad rounded apex; non-fibrillose . xiv. 5. Lino Schimp. 
. SEL eur ingulate, . the ape ee 
cleft; always non-fibr . 8. 
«> bebe ahs a to Apacs att, a: the oper never 
mbriate and two-cleft; with or without fibre ee 
14. St. 1. large, isosceles-triangular, in t the upper ‘ae almos 
always with fibrils; border of br. 1. 4-15 cells wide ; 
jus 
oo 
r sod rium Angstr. 
jot 
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