2 SYNOPSIS OF BRITISH MOSSES. 



Tribe iii. Sphagnacej:. 

 Erect. Brandies in fascicles^ partly patent, partly 

 reflexed. St. Without radicles, bark spongy of large 

 hyaline cells. L. generally with pores and spiral fibres 

 in the cells, those of the stem dissimilar to those of 

 the branches. Male fl. amentaceous, female gemmi- 

 form. Caps, at first sessile, afterwards slightly ex- 

 serted, globose, dehiscent by a spurious lid or Valve. 

 Spores four-sided. 



3. Sphagnum, Dill. , As above. 



Division II. STEGOMITRIA. P i H ' 

 Section 1. ACROGARPI. . 

 Fruit terminal on the stem. 



Tribe iv. WEissiACEiE. 



Perennial, creeping or erect, with innovations below 

 the floral apex. Branches dichotomous or fastigiate. 

 L. parenchymatose, basal cells hyaline, upper densely 

 chlorophyllose, often papillose. Caps, pedicellate, 

 erect. Perist. simple, rarely absent. Calyptra cu- 

 cullate, rostrate. Spores generally minute. 



Fam. 1. Weisseae. 



L. narrow, linear, lanceolate, and subulate, nerve 

 terete. Caps, varying from ovate to cylindrical, regular 

 or subincurved, gymnostomous or perist. single, 16- 

 toothed, teeth articulate. 



4. Systeginm, Schp. PI. minute. L. narrow, opaque, 

 miaute, papillose, crisped, cells in upper part minutely 

 quadrate, at base lax hyaline, nerve excurrent or 

 vanishing in apex. Caps, immersed or on a very 



