122 Myxophycese, Chamsesiplionaceae, Pleurocapsa. 



Strato membranaceo et saxis adh?erente, sa^pe etiam globoso, puncti- 

 vel maculiformi, 1-2, raro usque ad 4 mm. dlametro, ssepe diffluenti, 

 l?ete cferuleo viridi ; cellulis veg. plerumque 3-4 {j-. crassis (raro 

 usque ad 6) reciproce compressis, subglobosis vel ovalil)iis etiamve, 

 mutua pressione, angulatis, in stratum celliilarum pseudoparenchy- 

 maticum . consociatis; contentu pallide cieruleo vel olivaceo fere 

 homogeneo vel tenuissime granuloso ; membrana et tegumento 

 achrois, mediocriter crassis. 



Hab. in rivulis alpinis Bohemite, Tirolise et Dalmatii^ (Hans- 

 girg), in saxis submersis, socia Audouinelld chalybed. 



G. Pleurocapsa minor Hansg. Phys. und Alg. Mitth. p. 89, t. I, f. 1-10, 

 Prodr. n, p. 12G. — Strato tenui, initio punctiformi, demum cru- 

 staceo, coeruleo-viridi, fuscescente vel brutineo-nigrescente, sicco 

 nigro; cellulis in filamentis ordinatis 100 jj.. et ultra longis, pa- 

 rallelo more dispositis, mutua pressione subquadrangularibus, sed 

 etiam ovalibus vel globosis, rarius conico-elongatis, 3-6 {jl. crassis, 

 1 '/2-2 '/2-plo longioribus; contentu peripherico sordide cferuleo- 

 viridi vel olivaceo, rarius l)runneo-luteolo, tenuissime granuloso, 

 sphsericum achroumque granum, nucleum fingens, inglobante ; 

 membrana sufficienter crassa, achroa; gonidiis immobilibus, circa 

 1-1,5 [X. diam., 8-16 in gonidangiis 7-10 [x. crassis globosis vel 

 semisphsericis inclusis. 



Hah. in saxis, ripis marmoreis, in comitatu specierum Au- 

 douinellEe et Chamresiphonis passim, in Bohemia, Austria, Istria, 

 Dalmatia, Tirolia (Hansgirc^). 



7. Pleurocapsa fuliginosa Hauck Die Meeresalgen Deutschlands etc. 

 p. 515, f. 231, Notarisia 1886, p. 443, Hold. in C. H. et S. Phyc. 

 B. Am. n. 1011 Setch. et Gibbs in Phyc. B. Am. n. 701! — Strato 

 tenui, crustaceo, atro; cellulis 2-4 |x., familiis 50-100 [i. crassis; con- 

 tentu aureo-fulvo, homogeneo vel rufo-violascente, membrana 

 achroa. 



Hah. ad lapides in mari Adriatico orientali, Baltico et Nordlco 

 (Hauck), in Dalmatia (Hansgirgj; ad «Marblehead, Mass.» (Col- 

 LiNs), ad Bridgeport (Holden) prope Washington et in California 

 Amer. bor. (Setchell), in Norvegia (Foslie), sinu Chiliensi Ger- 

 manise borealis (Reinke, Reinbold). 



8. Pleurocapsa concharum Hansg. Phys. und Alg. Mittheil. p. 90, 

 t. I, f. 11-15, Prodr. II, p. 127, Osterh. et Gardn. in Coll. H. et 

 Setch. Phyc. B. Am. n, 1051! — Strato miniino, cellulis vegeta- 

 tivis 4-17 ;JL., diam. 1-2-plo longioribus, subglobosis, ovalibus, 



