^OO Protococcoidefe, Palraellacefe, Protoeoccus. 



t. 3 d, Rabenh. Fl. Eur. Algar. III, pag. 5(3, Kirclin. Alg. Schles. 

 p. 103, Hansg. Prodr. p. 141, n. 229, Cooke Brit. Fr. Alg. p. 29, 

 t. 12, f. 1, Wolle Freshw. Alg. U. S. p. 181, t. 161, f. 1, t. 162, 

 f. 2, De-Toni e Levi Fl. Alg. Ven. III, p. 83, Cystococcits huini- 

 cola Naeg. Einzell. Alg. p. 85, t. III E, Chlorococcuin humicola 

 Rabenh. Fl. Eur. Algar. III, p. 58. — Thallo tenui, pulveraceo vel 

 granuloso, tlavo- vel obscure-viridi, raro brunneolo-rufo, srepe late 

 expanso; cellulis globosis, 2-3 a., raro ad 25 [x. latis, solitariis vel 

 2-4 in farailias glomeruli ad instar congregatis; membrana tenui, 

 in cystis tantum incrassata, hyalina, chromatophoris viridibus, 

 plasmate cystarum brunneolo-viridi. 



Hah. in truncis arborum, assibus vetustis, muris humidis, la- 

 pidibus, saxis et terra humidis ubique et toto anni tempore vul- 

 garis, in Europa et America tam boreali quam australi. — Var. in- 

 signis Hansg. Prodr. p. 141 : cellulis plerumque globosis, 9-66, 

 raro ultra 100 [x. latis; membrana hyalina, crassiuscula, raro la- 

 rnellosa; contentu pallide vel sordide viridi, raro olivaceo-brunneo; 

 plasmate maturitate in cellulas (gonidia auct.) ininutas nuraerosas 

 vel raajores paucas immobiles gignento; cellulis his (raembrana cel- 

 lulae raatricis diffluente) liberis et gloraerulatira coacervatis. In ter- 

 ra uda ad niargines fossarum pr. Pragara Boheraiae (Hansgirg). — 

 Var. pulcher (Kuetz.?) Hansg. I. c. p. 141, Pleurococcus pulcher 

 Kirchn. in WLirttemb. naturw. Jahresheften Jahrg. 1880 et in Hed- 

 wigia 1880, pag. 144: cellulis ante divisionem globosis, divisione 

 peracta hemisphrericis vel angulatis, 11-27 a. latis, solitariis vel 

 2-4 in familias consociatis; membrana crassiuscula, non stratosa, 

 hyalina; plasmate granuloso, Isete viridi, olivaceo-viridi, brunneo- 

 rufo, purpureo-rufo, aurantiaco-flavo vel pallidiori, plerumque co- 

 loribus duobus immixtis ; thallo expanso, ssepius niucoso, obscure 

 viridi, brunneo vel rufescente. lu, locis humidis ad rauros vetustos 

 «Wurttemberg» Germanite (Kirchner) et in Boheraia (Hansgirg). 

 — Videtur Protococco pulchri Kuetz. {MicrocyUi pulchrce Flot.) 

 similliraus nisi identicus. 



2. Protococcus grumosus Richt. in Hedwigia 1884, pag. 65, Hansg. 

 Alg. et phys. Stud. T. 4, Prodr. p. 143, n. 230, Wittr. et Nordst. 

 Alg. aq. dulc. exs. n. 694. — Cellulis globosis, 3,5-14 y.., pleruraque 

 tantum 5-7 jj.. latis, in glomerulos vel gruraulos definitos, irregu- 

 lariter conformatos, denticulatos vel rotundatos, compactos, gela- 

 tinosos congregatis, raro inter alias Algas liberis singulisque; mem- 

 brana crassiuscula ; contentu viridi vel flavescenti-viridi, saepius 



