328 PKOTOCOCCE^E. 



m 



Palmclla granosa Berk., Glean. Brit. Alg. ii. p. 19. Mi- 

 crocystis granosa Meneghini, 1. c. p. 85. 



Hob. Growing in great abundance on sub-immersed 

 * Hypnum stellatum, in the bogs bordering on Whittlesea 

 Mere, summer : Rev. M. J. Berkeley. Aberdeen : 

 Dr. Dickie. Broadwater Forest : Mr. Jenner. 



" Pale green, or when preserved in the herbarium, with a 

 pale brownish tint. Growing in large masses of no certain or 

 distinct form, but broken into many angular faces, having a 

 very granulated appearance, and crumbling ' beneath the fin- 

 gers. The whole plant is made up of sub-elliptic, hyaline, 

 colourless, jelly-like bags, containing from two to four green 

 elliptical granules, which in some lights appear as if sur- 

 rounded with a pellucid border." Berk. 



Meneghini makes the following remarks on this fine spe- 

 cies : " Hie auctor monet speciem hanc prater colorem Hce- 

 matococco sanguineo Ag. simillimam esse ; et ejusdem affini- 

 tate cum Palmetto, rupestris animadvertens limites generum 

 Hsematococcus et Palmella incertos esse demonstrat, summo 

 nempe acumine novi generis Microcystis instituendi necessi- 

 tatem praesenserat." 



b. Usually but one investing membrane or vesicle. 



* Granules from one to eight. 

 8. H^EMATOCOCCUS ALPESTRIS Hass. 



Plate LXXXI. Fig. 3. tftukw- 



Char. Globules of very variable size, often large, rarely 

 concentric, containing one, two, four, or eight, but usually 

 two or four small, spherical, dark green granules. 



Pleurococcus glomeratus ? Menegh., loc. cit. t. v. f. 2. 



Hob. Wales : Sir W. J. Hooker. 



On looking over the splendid collection of Algae forming 

 part of the herbarium of Sir "W. J. Hooker, I noticed a 



