318 PALMELLE.E. 



7. COCCOCHLORIS GREVILLEI Hass. 

 Plate LXXVIII. Figs. 7 a. b. 8. 



Char. Fronds minute, densely crowded, globose or somewhat 



lobed, green, decidedly gelatinous. 

 a Granules elliptical. 

 /3 Granules small, globose. 



7 Frond smaller, more hyaline, and with larger globose 

 granules. 



Berk. Glean. Br. Alg. p. 16. t. 5. f. 1. ; Harv. in Manual, 

 p. 177. Palmella botryoides Grev., Crypt. Fl. t. 243. f. 

 2.; Harv. Hook. Brit. Fl. 1. c. p. 396. /9. P. botryoides 

 Lyngb., Dan. p. 205. 7 Berk., Glean, t. 5. f. 2. 



Hob. On heathy places, moist situations, frequent : 7 on 

 decaying stems of Asparagus officinalis ; in a hotbed : 

 Rev. M. J. Berkeley. 



" Fronds minute, densely crowded, globose, green, com- 

 posed of pale green jelly, in which are numerous darker gra- 

 nules, elliptic in var. a ; in var. yS globose, and accompanied 

 with smaller globose granules, collected more or less into 

 little rounded heaps, the longest of which are of the size of 

 the larger granules. After it has been dried, the jelly is 

 nearly colourless, and the granules are scattered, and all of 

 the same size." Rev. M. J. Berkeley. 



It is evident from the preceding description that more than 

 one species is included under the name of Palmella Grevillei. 



Note. I have since paid further attention to the subject of the division 

 of the mucous matrix into vesicles or cysts in Coccochloris, and I now 

 find that this structure is to be met with only in certain species of the 

 genus, and that it cannot be detected in any of the species figured in this 

 work. The species, therefore, with the frond thus divided, connect Cocco- 

 chlorisviith Hamatococcus, and scarcely differ from thoseof the latter genus. 



It is still probable that the structure really does belong to all the Coc- 

 cochlorides, but that the extreme delicacy of the organization of some of 

 the species prevents its detection. Ramifying throughout the substance 

 of the fronds of all the species may be observed numerous slender 

 branched tubes, which may either be parasitic growth, or else form part 

 of the organization of the fronds ; and in the latter case they may be pre- 

 sumed to be connected with respiration. 



