THE DEVELOPMENT OF THE CYSTOCARP OF GRIF- 
FITHSIA BORNETIANA. 
ARMA ANNA SMITH. 
(WITH PLATES I AND II) 
THE fruiting portion of Griffithsia was described in 1861 by 
Nageli,* who, however, excluded from the genus several of 
Agardh’s species, among them G. corallina, which he included 
under the genus Heterosphondylium. The fruiting branch of 
this genus he described as consisting of a basal joint, bearing a 
whorl of enveloping branches, a short terminal cell, and one or 
two intermediate joints, bearing two, or rarely three, trichophores 
and the favelle, besides ‘‘a characteristic rounded, flattened 
cell.” 
Bornet and Thuret? in 1867 confirmed Nageli’s observations 
in regard to the two trichophores borne by the intermediate cell 
in this species. 
Janczewski3 in 1877 published a detailed account of the 
development of the cystocarp in the same species, of which a 
brief summary is here given. The mother cell of the procarp 
divides by two horizontal walls into three cells, of which the 
upper undergoes no further development, while the intermediate 
cell cuts off an anterior cell, which is functionless, and after- 
wards produces two lateral cells, each of which divides at once 
into two cells, one small and appendicular (probably Nageli’s 
“characteristic” cell). The other, which is larger, divides into a 
“carpogenic cell,” which touches the anterior cell, and a mother 
‘Beitrage zur Morphologie und Systematik der Ceramiacez ; Sitz. d. kénigl. bayr. 
Akad. d. Wiss. 2: 391-397. 1861, 
*Recherches sur la fécondation des Floridées; Ann. d. Sci. Nat. Bot. V. 7: 147. 
1867, 
‘Notes sur le développement du cystocarpe dans les Floridées; Mem. de la Soc. 
1877. 
nat. d. Sci. nat, de Cherbourg 20: 109. 
1896 ] 
