308 HANDBOOK OF BRITISH MOSSES. 



rather to ferruginous than purple. Extremely variable; in 

 the plumose variety the leaves are very narrow and much 

 elongated (Hook, fy Wils. t. iv.). 



8. S. recurvum, P. Beauv. ; stem elongated, branchlets 

 spreading with short, oblongo-Tanceolate, erecto-patent, plane 

 leaves, recurved when dry ; margin undulated. S. Mougeotii, 

 Moug. & Nest. n. 1306. 



Growing intermixed with S. cuspidatum, W. Wilson. Bear- 

 ing fruit in summer. 



9. S. contortum, Schultz ; stem dark, with a simple layer 

 of cortical cells ; branches recurved ; stem-leaves broadly 

 ovate, branch-leaves acuminate, ovato-lanceolate, often subse- 

 cund ; cells crowded ; pores biseriate, minute, numerous. 

 Hook. Wils. t. Ix. ; (Moug. $ Nest. n. 806, 807.) 



In peat-mosses. Bearing fruit in July. 



Monoicous, often slightly fawn-coloured, variable, but dis- 

 tinguished by the brownish colour of the main stem, the 

 simple layer of cortical cells, and the biseriate minute pores. 

 The spiral threads often become reticulate. The branches 

 are sometimes but not always contorted, and in the variety 

 obesum they are swollen as in S. cymbifolium. 



In Spruce's variety S laricinum, however, there is more than 

 one cortical layer, but there are still the same minute pores. 

 Wilson however suspects that this may prove eventually dis- 

 tinct. 



10. S. squarrosum, P. ; stems elongated ; cortical stratum 

 double, not porous ; branchlets horizontal and deflexed ; cor- 

 tical cells slightly prominent above; leaves ovate, acuminate, 

 recurved, squarrose ; pores large. Hook. Wils. t. iv. ; Eng. 

 Bot. t. 98. ; (Plate 2, fig. 5) ; Moug. % Nest. n. 209. 



In bogs. Bearing fruit in summer. 



Monoicous ; grass-green above ; easily known by its squar- 



