222 



Seirospora Harvey. 



Seirospora occidentalis B0rgs. 



BORGESEN, F., Some new or little known West Indian Floridese (Bot. 

 Tidsskr. vol. 30, 1909, p. 14). 



This interesting plant (Fig. 209) was found among the above- 

 mentioned Callithamnion cordatum as an epiphyte upon Gracilaria 

 Blodgettii. 



Fig. 209. Seirospora occidentalis Borgs. Part of a female plant. 



(About 70: 1). 



The plant is much ramified and forms small, dense bushes 

 about 1 2 cm. high. 



The main stem is fastened to the host plant by means of 

 short, thick-walled rhizoids emerging from the lowermost cells 

 (Fig. 210 ^4.). The cells found here are short, nearly as long as 

 broad, about 200 // thick having very thick walls (the wall ca. 

 40 fjt thick). 



