524 
Fia. 
LIFE-HISTORIES 
348.—Peat mosses. A, part of a gametophyte, enlarged, showing male 
branches (a, a, a, a) and female branches (5, 6). B, part of a leaf (S. 
cymbifolium), 39°, showing the net-work of green cells surrounding the 
large ones which fill with water or air. C, vertical section through a 
small piece of leaf (S. cuspidatwm) showing the small and the large 
perforated cells, 28°. D, cross-section through outer part of stem 
(S. cymbifolium) highly magnified. EH, male branch of S. acutifolium, 
with a vegetative branch at the base, 3%. F, same, with many pseudo- 
leaves removed to show the male gametangia (antheridia), #. G, an 
opened and empty antheridium, 28°. 4H, five cells containing young 
spermatozoids, 43°. J, such a cell nearly ripe, 29°. K, spermatozoid, 
200, J, ripe ‘‘fruit’’ (sporophyte) with remains of the archegonium at 
its base borne on a stalk continuing the axis of the pseudo-stem which 
bears pseudo-leaves at its base; magnified. (Schimper.) 
‘ 
