820 Conjugatse, Desmidiacea3, Closterium. 



dell) : diametro 3-7-plo longius ; Lat. cell . 9 10 ;/. In Polo- ■ 

 nia etc. fl 



6. Closterium pusillum Hantzsch in Rabenh. Alg. n. 1008, Fl. Eur. 1^58 

 Algar. III, p. 125. — Cellulis exiguis, levibus, non perfecte cylindri- J 

 cis, a raedio in utrumque finera pauilum attenuatis, leviter curva- ■ 

 tis, apicibus rotundatis, diametro 4-6-plo longioribus; pyrenoidibus 

 2--1; locellis distinctis, apices versus silis, corpuscula mobilia 1-2 

 includentibus; diam. cell. 7-10 u.. 



Hab. in terra arenosa subhumida, prope a Kunigstein » in Saxonia 

 (Hantzsch), in Fennia (Elfving), in Polonia (Raciborski) — Var 

 monoiithum Wittr. in Wittr. et Nordst. Alg. aq. dulc. exsicc. n. 836 

 Botaniska Notiser 1886, p. 138 c, icone et in Notarisia 1886 

 p. 186: paullulo rainus curvatura, locellis apicalibus seraicellula 

 rum majoribus, corpuscula mobilia singula includentibus; crassitu 

 dine cellulfe 9-10 u.., longitudine 30-4S u.. In terra humida in 

 consortio O^cHlaricc spec. ad lacum « Csorber-Seei) in Tatra alta 

 Hungaria3 in altitudine 1380 mtr. s. m. (V. Wittrock). — Var. ma- 

 jus Racib. De Desm. Polon. p. 7: Exiguum, 86 ^ 13, leve, non per- 

 fecte cylindricum, a medio in utrunique finem paullum attenuatum 

 (6,5 [j.. lat.) leniter curvatum, apicibus plano-rotundatis; locello 

 distincto, 5 u. diam., corpuscula mobilia 4-5 incl udente. In Polo- 

 nia (Raciborski). 



7. Closterium juncidum Ralfs Brit. Desmid. p. 172, n. 16, t. XXIX, 1959 

 f. 6, Archer in Pritch. p. 749, Breb. Liste p. 153, n. 24, Rabenh. 

 Alg. sub n. 546 et n. 1448, sub n. 1434, Fl. Eur. Algar. III, p. 127, 

 Kirchn. Alg. Schles. p. 137, Cooke Brit, Desra. p. 30, t. 13, f. 7, 

 Wolle Desm. U. S. p. 38, t. 6, f. 2-3, Delponte Desm. subalp. p. 115, 



t. 17, f. 11-14, Hansg. Prodr. p. 178, n. 322, Closterium inierme- 

 diuyn var. juncidum Klebs Desm. Preuss. p. 16. — Elongatura, 

 anguste lineare, diametro 20-30-plo longius, levissime arcuatura, 

 utroque polo Jeviter attenuatum, apicibus truncatis vel truncato- 

 rotundatis; menibrana luteola vel luteo-fuscescente, striis paucis, 

 longitudinalibus, distinctissimis instructa; pyrenoid. 8-12 in utra- 

 que semicellula, parvis; locello minimo, sfepius obliterato, corpus- 

 cula pauca (4-6) includente; zygotis globosis, levibiis ; dim, cell. 

 220-370 s 5. 



Hab. in paludibus turfosis Anglice, Suecise, Galliae , Saxoniae, 

 Siiesiae, Borussise, Austriae, Norvegife, Belgii, Hungaria?, Fennise, 

 Boheraiae, Rossise, Daniae, Italia;, AniHricaj borealis, Groenlandi?e ; 



