310 PALMELLE^. 



2. SoROSPORA Ralfsii Hass. 

 Plate LXXIX. Fig. 3. 



Char. Frond minute, thin, gelatinous, hyaline, somewhat areo- 

 late; each areola containing 2 — 8 large, globose, blood-red 

 granules. 

 Palmella Ralfsii Harv., in Manual, p. 179. 

 Hah. Spreading over mosses on Cader Idris : Mr. Ralfs. 



"Fronds a few lines in diameter, gelatinous, somewhat 

 areolate, or as if composed of numerous small yesicles massed 

 together, each of which contains 2 — 4 or eight large blood- 

 red granules, which are much larger and of a far deeper colour 

 than those of P. montanaP — Harv. 



In the specimens which I have examined of this species, 

 the granules in each cluster have been usually not less than 

 six or eight, and between the clusters faint divisions of the 

 mucous matrix may be discerned, which increases still further 

 the resemblance which this and the preceding plant bear to 

 HcBmatococcus, and especially Hcsm. sanguineus. 



3. Sorospora virescens Hass. 



Plate LXXVIII. Fig. 8. a. 



Char. Frond green. Cells in clusters, nucleated, globose. 



Of this species I have seen but a very small fi-agment ; 

 there can be no doubt, however, I think, of its distinctness : 

 each cell is imbedded in a distinct cavity of the mucous 

 matrix, the outline of which may be distinctly traced subse- 

 quent to the removal of the cells. 



4. Sorospora grumosa Hass. 



Plate LXXX. Fig. 7. 



Char. Frond icidely expanded, clotted, brick-red, fioating. 

 Globides usually hinate, globose, hlood-red, and surrounded 

 by a narrow pellucid limbus, occasionally aggregated. 



