T 95 
Lemaneaceae of the United States. 
endochrome becomes more finely granular, of a yellowish- 
green color, and is at last collected into irregularly shaped 
plates distributed unevenly over the peripheral portion of the 
interior of the cell. In some cases the plates are elongated 
and arranged in imperfect spiral rows in some of the cells. 
Such a disposition of the endochrome probably led Thwaites 1 
to state that it was arranged spirally. Fig. 27 represents the 
arrangement of the plates, and the condition of an actively 
growing terminal cell of a branch. 
After the development of the main axis of the Chantransia - 
form to several cells, primary branches arise from the proximal 
cells, Fig. 23. The distance of these primary branches from 
the base of the main axis is dependent upon its freedom. If 
crowded, they are at a greater distance. The branches of the 
Chan transia-ior m always arise from the side of the distal end 
of a cell. 
In some species of the subgenus Lemanea , L. annulata Kiitz. 
for example, the cells are of about the same diameter through- 
out, the filaments being much more slender than in L. australis 
Atk., but not so slender as in the subgenus Sacheria. In the 
subgenus Lemanea the filaments range from 3 mm. to 4 mm. 
in length. It usually persists around the cluster of sexual 
shoots and in sterile mats, throughout the winter, disappear- 
ing almost altogether in the spring, while in the subgenus 
Sacheria it is very fugacious, usually disappearing entirely 
quite early in the winter. Fig. 28 a is a rhizoid developed 
from the Chantransia-i orm \ b is a short fertile axis of the 
Chantransia-iorm arising from the rhizoid and producing at 
its distal end a young sexual shoot c , and at the side a branch 
of the Chantransia- form. Fig. 22 represents a spore a soon 
after germination with an axis of the Chantransia- form grow- 
ing directly from it d , and two rhizoids b b , also growing from 
the spore, which in turn are producing young axes of the 
Chantransia-iotm cc. 
Thwaites 2 first fully described and figured a member of the 
Chantransia-i orm and its relation to the young sexual shoot. 
O 2 
Loc. cit. 
2 Loc. cit. 
