_ YOLUME XX1 NUMBER 5 
ih 
PBOTANICAL GAZETTE 
NOVEMBER 1896 
DEVELOPMENT OF THE PROCARP AND CYSTOCARP 
IN THE GENUS PTILOTA. 
BRADLEY MooRE Davis. 
(WITH PLATES XVIII AND XIX) 
forms. Later the points then worked out were verified in an 
Atlantic Coast species, P. serrata, and this form, for reasons of 
Convenience, was chosen as the type for the detailed description 
of the anatomy and development of the cystocarpic fruit. he 
count of P. plumosa and P. plumosa filicina is of the nature of 
Comparison with P. serrata. Most of the work was carried 
" cryptogamic laboratory of Harvard University under 
ection of Dr. Farlow. 
Pricora sERRATA Kiitz. | 
___ This species is very abundant on the Atlantic coast north cee 
Cape Cod, and fruiting specimens, either cystocarpic or tetra- 
“€, May be obtained readily in the proper season. The 
€r’s material has all come from Nahant, Mass., and 
cystocarpic plants have been found there as early as March ce 
as late as May. Although cystocarpic fronds are abundant S 
f 
sue 
Eases 
