117 



POTTIA (Fig. 233 B), PHASCUM (Fig. 233 A):— 



.'&^ 







VI" c> 



cxr- 



't* 





^ ■■ ■ ^ 



Fig. 236. Pottiaceae (see also Fig. 193, p. 100). — A, Phasciim ciispidntiim, 

 from left to right: spore in polar view (x 250); spore in lateral view, surface 

 (left) and opti'cal section (right; x 1000); LO-patterns. B-E, surface (x 1000; 

 only a fourth of a hemis])here shown), sclerine slralKication (about x 2000), 

 and LO-patterns in Pottin crinita (B), P. davalliana (C), P. triincata (D), and 



P. heimii (E). 



PYRRHOBRYUM:— 



Fig. 237. Pyrrhobryum spiniforine. From left to right: spore in lateral view 

 (x 250); spore in polar view (x 1000), surface (left) and optical section; 



LO-patterns. 



