312 PALMELLE^. 



miicoso froudis matricalis substrato obvoluta et impeclita 

 extricarl nequeunt et ibidem evolvuntur usque dum tandem 

 eodem dissolute et evanido libere disseminantur. In primis 

 illis frons, tota vita perdurante, semper definita remanet : in 

 his primum definita quidem est, sed ab initio usque effmiditur 

 et dissolvitur. DifFerunt itaque Coccoclilorides a Palmellis, in 

 eo quod granula in sinu globulorum ipsorum gignuntur et 

 evolvuntur, proptereaque frons definita hie necesse inest, dum 

 illte eodem necesse carent; et quamquam serius in multis 

 quoque Coccochlorihus frons ipsa effundatur, origine taraen 

 summopere ab ilia Palmellarum differt. Ita ut PalmellcB Proto- 

 coccos in muco indefinito nidulantes representant, sic Cocco- 

 clilorides a Chlorococcis in fronde mucosa definita inclusis 

 efFormatae dici possunt." 



1. COCCOCHLORIS PROTUBERANS SjJVeng. 



Plate LXXVI. Fig. 7., and PI. LXXXII. Figs. 6, 7, 



8, 9, 10. 



Char. Fronds green, gelatinous, soft, irregidarhj lohed, spread- 

 ing, confluent. Globules elliptical, generally more obscure 

 toioards the centre. Vesicles of various sizes, spherical or 

 elliptical, constantly surrounded ivith a diaphanous margin, 



Ulva protuberans Smith, E. B. t. 2583. Palmella proiu- 

 bera7is Grey., Flor. Edin. p. 323.; Crypt. Fl. t. 243. f. 1. 

 Palmella j)rotuberans Ag., Syst. p. 14. ; Hook. Br. Fl. 

 vol. ii. p. 396. ; Harv. in Manual, p. 176. Coccochloris 

 protuberans Spreng., Syst. Veg. vol. iv. p. 373. Palmo- 

 gloea protuberans Klitzing, Pliy. Gen. p. 176. 



Hub. Sussex, spring to autumn : Mr. Borrer. Camsie 

 Glen, near Glasgow : Sir W. J. Hooker and Dr. Greville. 

 Pentland Hills : Dr. Greville. On the ground at Crow- 

 borough Warren : Mr. Jenner, Co. Wicklow : Mr, 

 ^^y^*' ^ Moore. 



t/^o a Xhe fronds in the beginning roundish, of very variable 



yy^ magnitude, quickly run into a mass more or less extensive, 

 ^ investing surrounding bodies or spreading over the naked soil. 



