Lemaneaceae of the United States . 209 
basidia. The remaining cells increase in diameter, become 
oblong, oval, or elliptical, and form moniliform chains of 
carpospores. Fig. 14 represents the slender articulated fila- 
ments developed from the whorl of cells : Fig. 16 shows them 
in a more advanced state of growth, the cells, a little distance 
from the carpogenic cell, becoming elliptical in outline, and 
the protoplasm more dense. The style of branching also can 
be seen ; the branches first appear as minute buds from the 
side of the distal end of the young carpospore. Fig. 17 
represents a farther development. The nucleus is here very 
distinct. Fig. 18 represents a portion of a cluster of fully 
developed carpospores. Figs. 14, 16, 17, 18, 58 and 60 are 
from the subgenus Sacheria. 
In the subgenus Lemanea several or all of the cells of the 
procarp show a very profuse development of short-celled 
filaments. In many cases the entire procarp at the time of 
fertilization is literally covered with these outgrowths from 
the cells. By the time that the ooblastema-filaments are de- 
veloped, the great mass of these vegetative buds, developed so 
close to the medullary layer, and partly within it, make it very 
difficult to ascertain whether more than one cell of the procarp 
functions as the carpogenic cell. 
Sirodot 1 found difficulty here, and left it an unsettled 
question as to whether any of the cells, except the one at the 
base of the trichogyne, produced carpospores. 
Ketcl 2 found that only one cell produced carpospores; the 
vegetative buds from the other cells of procarp he regards 
as the homologue of the enveloping filaments in Bcitracho - 
spermnm . 
My own researches corroborate Ketel’s view. After making 
very thin sections, containing a procarp with young carpo- 
spores, the origin is still obscure, because the carpogenic cell 
is within the wall and because of the dense mass of vege- 
tative buds from the procarp. By treatment of the prepara- 
tion with chloral hydrate the young cell-walls are dissolved, 
1 Ann. d. Sci. Nat. 5th ser. Bot. xvi. p. 30, 1872, 
2 Anat. Untersuch. liber Lemanea , 1886. 
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