884 THE JOURNAL OF BOTANY 
surface of the leaf, more rarely with few pores on both surfaces or 
numerous pores on both; only in S. Pylaiei are the pores 
altogether absent. Stem-cortex genera ally in one or two layers, 
more rarely i in two to several layers, cells of median width to wide, 
hat fim 
ur grass- or grey-green, pene or golden-yellow, dnc 
violet to — or red-brown, never pur 
The section pea _— forty or fifty species, of which 
eleven a inhebite s of Kur 
e eer aien of sa belonging to this section it is 
important that both the branch- and the stem-leaves should be 
selected from the upper part of the stem, just below the capitulum. 
33. S. conrorrum (Schultz.) Limpr. non Nees et Hornschuch. 
he - S. laricinum qe MSS. 1847; S. contortum 3 laricinum 
Bryol. Brit. 1855, 23; S. neglectum Angstr. 1864; S. curvi- 
aoa (Wils, MSS.) Hunt, 1 1867. 
Exsicc. Braithw. Sphagn. Brit. Exsice. No. 18 (1877). 
Tufts generally loose, 7-15 em. in height (submerged forms up 
to 80 and 40 cm. long and generally more slender), pale bee 
green to light green or dark green, frequently variegated w 
brown or light paren brown to dark brown or blackish, tbe 
times somewhat violet. 
Stem rotons rigid and dark-coloured, rarely greenish. Ste 
_ cortea in two to three layers (rarely in four). dg cylinder bisque 
less or ate frequently brownish red to dark brow 
es with two to five branches, the two hi three spreading 
oO 
Q 
°o 
— 
paler ay. ye fie sae ya sometimes longer, someti shorter ; 
leaves rie rather closely arranged but not closely imbricate, 
frequently s 
Branch- rade small generally narrow-ovate i ovate, *7-1°5 
1 ng; on the pen nt branches lanceolate ; somewhat concave with 
the margin iacureae above, when dry Baiseaily chapel undulate. 
Pores very small, weakly ringed and generally few On 
the outer surface generally scattered, rarely SScitaiay seni n the 
inner surface either quite without pores or with a few in the peices 
part of the leaf. 
Stem-leaves small, emma segegrerae 4 esained with the re ha 
urved = apex ro ngs and w mbriate, °6-1°4 
tie generally 1 mm. long, very r rarely ‘et ‘108 mm. a and shat 
ngulate. Border generally widened below. Non- fibrillose or with 
a ‘ne fibrils in the upper third. Pores on the outer surface very 
few and very small; on the 1 inner surface larger, non-bordered, an 
generally only near the apex or in the upper third. Hyaline aie 
very rarely septate 
Dioicous. t Perickssial bracts oblong, with the apex acuminate, 
border of equal width all round, hyaline cells in the upper part rarely 
