690 Protococcoideag, Pnlmellacese, Pleurococcus. 



giiitudine maxime vai-iis, 3,5-15 a. latis, globosis, plerumque sin- i 

 gulis, rarius 2-4 in familias consociatis, in stratum miniatum vel \ 

 brunueolum longe lateque effusum, plus minus mucosum aggregatis; 

 membrana subcrassa, achroa, hyalina, sa^pius discedente; plasmate : 

 primo chlorophjlloso-viridi, dein oleoso-aurantio. 



Hab. in parietibus caldariorum, per annum, totius Europse. — ' 

 Var. roseolus Hansg. Prodr. p. 134: cellulis 6-10 [j.. latis, globo- '. 

 sis vel ovatis, usque ad 12 (raro 15) /7.. latis; membrana tenuiori, ; 

 hyalina, contentu roseo vel pallide rufescenti lateritio, subtiliter • 



granuloso, nitente; cellulis nonnullis medio leniter incurvis vel uno ' 



polo porrectis; thallo pulveraceo, haud mucoso. In Bohemia (Hans- j 



GIRG). \ 



6. Pleurococcus crenulatus Hansg. Prodr. p. 133, in CEsterreichische 1627] 

 Botanische Zeitschrift 1886, n. 4, et in Notarisia 1887, p. 337. — ; 

 Aereus; strato obscure luteo-viridi, pulvereo vel subgelatinoso, } 

 plus niinus effuso; cellulis singulis, globosis vel subglobosis, ad 6-9 ) 

 (x. latis, binis et 4-8 in familias rotundatas vel oblongas, ad 18 



If.. crassas consociatis; membrana cellularum ad 3 y.. crassa, achroa ' 



plerumque crenulata; cytioplasmate chlorophylloso. ' 



Hab. in cortice arborum et in terra subhumida sabulosa, s.iepe j 



una cuni Hormiscid crenulatd Kuetz. pr. ((Veseli » Bohemiai (Hans- \ 



girg). — Ex De-Wildoman sistit acinetas Hormiscicv crenulaice. \ 



7. Pleurococcus pachydermus Lagerh.. in Wittrock et Nordstedt Alg. ic28 1 

 aq. dulc. exs. n. 447 et in Botaniska Notiser 1882, p. 55. — Cel- i 

 lulis e mutua pressione angulato-rotundatis, subaequalibus, 15-21 \ 

 [j.. diam., numerosis in familias consociatis, in stratum crustiforme : 

 aggregatis; cytioplasmate cellularum vegetantium plus minusve ' 

 viridi, cellularum perdurantium iu guttam roseolam mutato, post ] 

 mortem expallescente; raembrana cellularum 2-3,5 a. crassa. 



Hab. in terra humida vel in fragmentis plantarum mortuarum , 



ad ((Bellevue» prope Holmiam Sueciffi. ' 



8. Pleurococcus lateritlus WoIIe in Bull. Torr. Bot. Club 1877, VI, 1629 

 n. 35, p. 185. — Aoreus; strato mucoso, fusco-rubro ; cellulis 7,5- 



15 p.. diam., glubosis et singulis et 2-4-8 in familias subsph?eri- 

 cas consociatis, 20-35 ij.. diam , [)lerumque in partes quatuor per 

 lineas fuscas dissectis; membrana tinna, ^ordide fusco-rubra, haud 

 lamellosa. 



Hab. ad asseres vetustos ad ((Aiken)) in Carolina australi Amer. 

 bor. (H. W. Ravenel). 



9. Pleurococcus monetarum Keinsch in Flora 1881, n. 9. — Cellulis i630 



