Conjugatoe, Desmidiaeese, Euastrum. 1085 



IX. latis, fere sesquilongioribus, 12-14 u. crassis; niembrana vor- 

 rucis niinutis rotundatis granulata In liohemia (IIansgirg). — Var. 

 insulare Wittr. Om^Gotlands oeh Oelands Sotvattensalger p. 49, 

 t, 4, f. 7: lobo polari latiusculo, leviter retuso, lobis lateralibus 

 minus retusis, isthmo angustiori. In Gotlandia et Oelandia Suecia) 

 (Wittrock), in Fennia (Elpving). — Diraens. cell. 26-30^20-22; 

 latit. isthmi 5-C a. Euastro lobulato Brcb. [Cfr. supra] varietas hasc 

 proxima est characteribusque allatis diversa. — Var. dissimiie Nordst. 

 Desm. Arct. 2 p. 31, t. 8. f. 31, Hedwigia 1870, p. 22, Euastrum 

 binale Nordst. Desm. Spotsb. p. 37; semicellulis lobis basalibus sim- 

 pliciter repandis, angulis (lob. bas.) a vertice visis inter se dissimili- 

 bus, superioribus retusis, inferioribus integris, a vertice visis sub- 

 rectangularibus, medio utrinque turaore parvo instructis , apicibus 

 truncatis excavatis, a basi ipsa conspectis ellipticis apicibus obtu- 

 siusculis. In regionibus arcticis imprimis in Spetsbergia. — Var. 

 Obtusiusculum Schaarschm. Magjar. Desraid. p. 263, f. 3. : angulis 

 inferioribus oblique truncatis; semiceliulis e latere visis circulari- 

 bus, medio utriiique veiitricoso-inflatis, apicibus producto-trunca- 

 tis. Ad (( OfTenbanya 1) in turfosis ((Mluhan dictis iu Hungaria (IsT- 

 vanffi-Schaarsciimidt). — Dimens. 20-24 =; 16-20. — Var, crassum 

 Josh. Burmese Desmidiese p, 627, t, XXIII, f, 11-13: seraicellulis 

 illis E. binalis form9e typicae similibus, angulis cornigeris, lateri- 

 bus hinc illinc excavatis, tumore unico basali praeditis. Ad (( Ran- 

 goon » in Birraania Asiae (Romanis) ((An Euastro cancliano Delp. 

 est varietas haec proxiraa?» Dim. circ. 45^:30 (ex icone), lat. 

 isthm. 6 a. (ex icone). — Var. rotundatum Istv. in Notarisia 

 1886, p. 236, Euastru7n lobuiatum Breb, Liste 1856, p. 124, t. I, 

 f, 4?: lobis rotundatis. In lacunis fl. ((Vagn prope « Rc)zsahegy » 

 lIungarijB (Istvanffi-Schaarschmidt). — Dimens. 19=:^ 16, isthmus 

 4 ij.. latus. — Var. majus Wolle Hedw. 1883 p. 190, ]: typo omnibus 

 partibus majus, 55 » 40. In Amer. bor, — Var, lagoense Nordst. 

 Desm. Bras. p. 218, t. 7, f. 4. Ad«Lagoa Santa» in Brasilia Ame- 

 ricae australis (Warming). — Var, simpiex (Wolle) Hansg. Prodr. 

 p. 253, Euasirum integrum WoUe Freshw. Alg. U. S. p. 36, t. 

 27, f. 10-22, Euastrum simplex Wolie Desm. U. S. p. 106, t. 27, 

 f. 18-22, non (j'dy : constrictione inferiori semicellularum nulla; 

 cellulis 16-36 a. latis, diametro sesquilongioribus ; isthmo 5 [u lato, 

 In America boreali. 

 46, Euastrum Rabenhorstii Delp. Specim, Desm, subalp, p. 93, t. 6, ?qi8 

 f. 5, — Duplo magis iongum quam latum ; seniicellulis eximie cu- 



