984 Conjugatse, Desmidiaceae, Cosmarium. 



catis, margine crenatis, crenis 12; a vertice conspectis anguste 

 ellipticis, a latere visis sursum dilatatis, apice subtruncatis; raera- 

 brana raargineni versus obsolete granulato-plicata, plicis secus se- 

 ries regulares, concentricas ordinatis; pyrenoidibus binis; dimens. 

 49-52^52-55, crass. 26 a., lat. isthmi 17-19. 



Hab. in « Kungsparken » et ad « Vaksala » prope Upsaliam 

 SuecisB (LuNDELL), locis variis Norvegiae (Nordstedt), Groenlan- 

 diae (Nordstedt), Italise (Wittrock et Nordstedt), Spetsbergiae 

 (Nordstedt), Novse Semlise (Wille), Britanniss (Archer, Cooke), 

 Vogesorum (Lemaire), Fennife (Elfving). — Var. subtruncatum 

 Hansg. 1. c. : cellulis 45-46 * 48-52, isthrao 15-18 ^j.. lato; seraicellu- 

 lis vertice saepe applanatis, in utroque latere convexo subundulato- 

 crenatis, crenis in utroque latere 4, in vertice4; ceterura ut in typo. 

 In saxis inundatis circa « Davle » Boheraiae (Hansgirg). — Subsp. 

 arcticum Nordst. Desra. spetsb. p. 31, t. VI, f. 13 et in Hedwigia 

 1874, p. 36: a typo differt raembrana pellucido-punctata, granulis 

 (in ipso dorso saepe subtruncato quadricrenato nullis) in crenis et 

 raarginem versus binis, basim versus singulis ornata; pyrenoidibus 

 binis. In ins. spetsbergensibus et Groelandia (Nordstedt), in Ty- 

 rolia (Nordstedt). — Var. subarcticum Boldt Studier p. 21, t. I, 

 f. 24, Notarisia 1888, p. 599: dorso lateribusque semicellularura 

 rectis, quadricrenatis; seraicellulis a latere visis subcircularibus, 

 apice truncato, in raedio leviter retuso. Ad « N. Maligiak » in 

 Groenlandia. Dimens. 62,4 ^ 70, lat. isthmi 24 p.., crassit. 36 fjt.., 

 lat. apic. 36 p.. — Cfr. etiam var. amplum Maskell e Nova Ze- 

 landia. 



120. Cosmarium smoiandicum Lund. Desm. Suec. p. 38, t, 2, f 17, 2357 

 Hansg. Prodr. p. 198. — Mediocre, suborbiculare, diametro octava 

 parte longius, 54 » 48, profundissirae constrictura, sinu lineari sub- 

 angusto, isthrao 12 ^. lato, 28 a. crassum ; seraicellulis subseraicir- 

 cularibus, dorso omnino convexis sed pleruraque raedio dorso sub- 

 truncatis, ventre planis, angulis inferioribus obtusis, papilla in- 

 structis; a vertice visis ellipticis, a latere visis circularibus; mem- 

 brana sparse et grosse punctata; fascia connexiva minus distincta; 

 pyrenoidibus binis. 



Hab. ad cc Riippe » in Sraolandia Sueciae (Lundell); in Belgio 

 (De-Wildeman) ; in Birraania Asiae (Joshua). — Var. angulosum 

 Kirchn. Alg. Schles. p. 150, Hansg. 1. c. : cellulis 48-55 =*^ 42-48, 

 isthrao 8,5-11 y.. lato; seraicellulis sine papilla vel papilla mi- 

 imtissima basi instructis, vertice distincte applanatis, lateribus non 



