208 



SEAWEEDS 



Lcmanca, and these have been erroneously termed the 

 " Chantrans'ia forms " of these genera ; but this means 

 no more than if the protonema of a moss were to be 



FIG. 62. Chantransia corynJnfera. a, filaments with antheridia ; b, show- 

 ing young trichogyne ; c, the same fertilised ; d, e, f, 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 ofLemanea 

 and Batrachospermum have nothing to do with the 



