THE GENERA OF MOSSES. 
139 
9. a, Spherical and reticulated sporules of S. squar-- ' 
rosum. 6, Deltoideo-pyramidal sporules of 
*S'. acuthfolium. See also Schw^gr. Suppl. 
Tab. 5. fig. 9. 
10. A portion of a leaf of S. ohtusifoUum, to show 
the reticulations and transverse striae. 
11. A portion of a leaf of S, squarrosum, showing, 
besides a variation in the form of the areolae, 
curious circular lines of the same nature as 
the transverse ones. 
1% Section of the stem of *S', obtusifolium. 
All the figures are more or less magnified. 
Phascoide^, Gen, (3 — 4). 
Char. Receptaculum hand pedicellatum, sed intra Jhlia 
perichtetialia sessile. Calyptra dimidiata, aut fugax ^aut 
per sis tens. Seta longitudine et colore valde varians. Theca 
Integra non angulata. Operculum persistens obliquum. 
Peristomium nullum. 
Char. The receptacle is sessile. The calyptra dimi- 
diate, in some very fugacious, in others persistent. The 
seta very variable with respect to colour and length. The 
theca entire, and without angles. The operculum persistent 
and oblique, inclining to rostrate. There is no peristome. 
Obs. We have been obliged to have recourse, more to 
the structure of the theca, than to any peculiar habit in the 
plants forming this tribe; indeed there are few genera, 
with terminal setae and entire capsules, to which they do 
Tiot bear some affinity. Th,e above character is therefore 
