THE TRUE MOSSES 523 
OND: 
Pe 
=——— WIS 
" 7) CSSA , 
WYAYD 
BY a 
‘e \_\ 
ee 
CHE 
De ea 
oibge ), 
a 
aS 
= 
sat 
H ai 
oo} 
nee 
= 
Fig. 345.—Horned-liverwort. Young sporophyte (sg, sg) showing the be- 
ginnings of a columella (c, c) and spores (s). L, L, calyptra, 492. 
(Hofmeister.) 
Fic. 346.—Peat moss (Sphagnum acutifolium, Peat moss Family, Sphagna- 
cee). A, spore, highly magnified. C, spore (s) germinating in water 
producing a green branched thread or protonema (n, n’) from which 
buds (pr, pr) arise and produce gametophytes. (Schimper.)—Plant 
common in bogs. 
Fic. - 347. — Peat 
moss. Flat pro- 
tonema (pr, pr) 
produced on 
moist earth, giv- 
ing rise to a 
gametophyte (m) 
and pseudo-roots 
(w) 422. (Schimp- 
er.) 
