PLATE I. 
(Fig. 1 from a Specimen lent by Mr. Howse, the rest from Schimper’s work.) 
Fic. 1.—Prothallium with young plant. 
” 
2.—Sph. cymbifolium. Vertical section of stem, passing also through two leaves 
and the base of a branch fascicle. 
3.—Ditto. Transverse section showing the pith or axile cells, the indurated peri- 
pheral layer, and the four strata of cuticular cells. 
4.—Cells of pith. Fic. 5.—Ditto of woody layer. Fic. 6.—Ditto of cuticle. 
7.—Cells of a branch leaf of Spk. cymbifolium, 
7«.—Transverse section of a leaf of SPA. sguarrosum. 
8.—Cells of a branch leaf of Spk. acutifolium seen from the back. 
8x.—Transverse section of same. 
9.—Male inflorescence of SpA. cymbifolium. FIG. 10.—Ripe antheridium with 
paraphyses. 
11,—Vertical section of a capsule still enclosed in the calyptra. c, calyptra; s, cavity 
of spore sac ; , pedicel of capsule. 
12..-Macrospores. FIG. 13.—Microspores. 
