208 SEAWEEDS 
Lemanea, and these have been erroneously termed the 
“ Chantransia forms” of these genera ; but this means 
no more than if the protonema of a moss were to be 
_ Fic. 62.—Chantransia coryubifera. a, filaments with antheridia; b, show- 
ing young trichogyne 3 ¢, the same fertilised; d, e, J, g. stages in develop- 
ment of cystocarp. Highly magnified. (After Bornet and Thuret.) 
called its “ Conferva form,” or the prothallus of a 
fern its “ Liverwort form.” These growths of Lemanea 
and Batrachospermum have nothing to do with the 
