CHROOCOCCACEjE. 211 



spherical or elliptic, rather crowded, single or in pairs, nestling 

 in a homogenous jelly, tegument quickly diffluent, cell-contents 

 blue-green, delicately granulose. 



SIZE. Cells -0035--006 mm. diam. 



Kirch. Alg. Schles. 261. 



Coccochlons Grevillei, Hass. Alg. 318, t. 78, f. 7 a, b, 8. 



Palmella botry aides, Grev. Crypt. Fl. t. 243, f. 2. Eng. 

 Fl. v., 396. Eng. Bot. ii., p. 207. Grev. Fl. Ed. 323. Mack. 

 Hib. 244. 



Palmella Grevillei, Berkl. Glean, p. 16, t. v., f. 1. Harv. 

 Man. 177. 



Botrydina Grevillei, Meneg. Nost. p. 47. 



Byssus botryoides, Huds. Ang. 608. Lightf. Fl. Scot. p. 

 1006. Rehl. Cant. 447. 



Cococliloris radicata, Johnst. Fl. Berw. ii., 262. 



Olivia botryoides, Gray Arr. i., 349. 



Byssus pulverulenta viridis, Dillen. Muse. 3, t. 1, f. 5. 



Byssus botryoides saturate virens, Ray. Syn. 56, No. 5. 



On damp heaths and moors. 

 Plate LXXXn.fig. 3. a, natural size ; b, cells magnified 400 diam. 



Aphanocapsa depxessa. (Hass.) RaWi. Alg. Eur. n., 51. 



Thallus somewhat hemispherical, depressed, gelatinous, green. 

 Cells sphserical or irregular, variable in size. 



SIZE. Cells -0025--003 mm. 



Palmella depressa, Berk. Glean. 19, t. 5, f. 4. Harv. Man. 

 178. 



Coccochloris depressa, Meneg. Nost. 68. Hass. Alg. p. 316, 

 t. 78, f. 4 , b. 



Growing on an old pump, at Cotterstock, Northamptonshire, 

 constantly moistened with the drippings from the spout. 



" Fronds bright yellow-green, gelatinous, subhemispherical, depressed, 

 crowded together, filled with more or less globose or angular very minute 

 granules." Berkeley. 



Plate LXXXV1. Jig. 4. a, plant natural size ; &, cells magnified 400. 



GENUS 84. MICROCYSTIS. Kutz. (1833.) 



Cells sphgerical, numerous, densely aggregated, enclosed in a 

 very thin globose mother vesicle, forming solid families, singly, 

 or several, surrounded by a universal tegument. Cell division 

 in three directions alternately. 



This genus as defined by Eabenhorst (Alg. Eur. ii., 51) not appearing 

 to differ essentially from Anacystis, both are united in this work. 



