MAU1NE ALGAK FROM EASTER ISLAND 



295 



The female plant (Fig. 35 a) is more robust. The binate cystocarps are 

 developed near the top; in the largest ones observed the halves were almost 

 spherical, measuring c. 130 jt. Young stages were not observed. No trace of 

 a cortical laver could be found. 



Fig. 3). Callithamnion paschale now spec, a part of $ specimen, c. co /i; b of <f specimen, 

 c. 180 /i; c of tetrasporic plant, c. 150 /i; d base of a plant, c. 80 /i. 



C. paschale recalls scopulorum as described by the author in » Botany of 

 the Fserdes», Part. II, p. 377. But C. scopulorum differs, among other things, 

 in being often bi-tripinate, the cells in the main stem are proportionally much 

 longer, the branches taper much more against their apex, the tetrasporangia 

 are more spherical, etc. 



C. Pcnnula Grunow from St. Paul's Island, Novara-Exp. p. 60, pi. 6 fig. 1, 

 with which our new species might perhaps also be compared, is a much larger 

 and more branched plant with a dense nest of basal rhizoids. 



Area of distribution: Endemic. 



