270 
EXPLANATION OF THE PLATES. 
Fig. 16. Hypnum cupressiforme. Musci. Peristome 
split, laid open, and magnified, to show the fringe and 
teeth. — Peristome double; teeth 16, lanceolate; cilias 16, 
opposite, membranaceous, united at bottom; bristles 16, 
interposed. 
Fig. 17. Sphagnum palustre. Musci. Part of the plant 
magnified; surcule branched, leaves oval, blunt, concave, 
tiled-like; pedicell short; urn ovoid, upon a disk-like 
apophysis ; peristome 0. 
a. Urn, the calyptra and operculum being taken off. 
I . Orifice naked. 
c. Apophysis. 
Fig. 18. Gymnostomum pyriforme. Musci. Germination 
of its seminule, as observed by Hedwig, very much mag- 
nified; showing the seminule throwing out a radicle, and 
a succulent thread, considered as a cotyledon, which ap- 
pears to be jointed, and having nipples which elongate into 
branches. 
Fig. 19. Variolaria tumida. Lichenes . Entire plant mag- 
nified. 
a. Thallus thin, crustlike, growing upon trees. 
1. Patellules whitish, convex at first, slightly concave 
afterwards. 
Fig. 20. Patellaria ocellata. Lichenes. Entire plant mag- 
nified. 
a. Thallus adherent to stones, solid, crustlike, wrinkled, 
areolated, greyish white. 
1. Scutelles black, concave; edge elevated, of the colour 
of the thallus. 
Fig. 21. Isidium corallinum. Lichenes. Entire plant 
magnified. 
a . Thallus. 
I . Podetia solid, cylindrical, branched, crowded, whitish. 
c. Terminal globules. 
Fig . 22. Tips of the podetia of the same. 
a. A globule still adhering to the podetia. 
1. Pitt remaining after the globules have fallen off. 
Fig. 23. Cenomyce pyxidata. Lichenes . Entire plant. 
a. Podetium proliferous, fistular, funnelshape at top. 
1. Podetia growing on the edge of the lower podetium. 
c. Cephalodiiun thick, irregular, sinuous, brown. 
