Coiijugatse, Desmidiaceto, Cosmarium. 993 



(BOLDT) nec iion in Araerica boreali (Wolle). — Dimens. 70-90 

 ^51-GG, crass. 34-43 /jt., lat. istlimi 18-27 ij.. — Var. subcirculare 

 Wille Bidrag til Kundsk. om Norges Ferskvandsalger p. 20, t. 1, 

 f.-8: subraediocre, paullo magis longuni quara latum, 48 i; 42, ob- 

 longo-circulare, 23 p.. crassum, isthmo 15 (j.. lato; subsemicellulis 

 marginem versus seriebus circiter 4 granulorum pra^ditis, a vcr- 

 tice visis oblongo-ellipticis. Ad (c Skeberg, Skibtvedt » NorvegitB. 

 — Var. mesoleium Uacib. Desm. lituan. in Notarisia 1889, p. 060; 

 semicellulis a fronte conspectis medio levibus a vertice visis medio 

 punctatis. In a Borciany » et (( Sieniawa » montibus Carpathicis 

 (Raciborski). Dimens. 96^63, lat. isthrai 20 ,a., crass. 73 p.. 

 130. Cosmarlum binum Nordst. in Wittrock et Nordstedt Alg. aq. 2373 

 dulc. exs. sub n. 383 et in Botaniska Notiser 1880, p. 121. — 

 Diaraetro quarta v. quinta parte longius, medio profunde constri- 

 ctura sinu lineari angustissirao (extrerao ampliato , semicellulis py- 

 ramidatis apice late truncato 6-crenatis, angulis inferioribus rotun- 

 dato-obtusis, lateribus modice convexis crenatis crenis circ. 10 

 (bigranulatis), supra isthmura turaore plus minus circulari v. el- 

 liptico granulato granulis in series circ. 7 verticales apicibus con- 

 vergentes dense ordinatis et infra raagis sparsis v. in 2 series ho* 

 rizontales positis ornatis ad marginem versus granulatas granulis 

 radiatim et concentrice dispositis in seriebus (2-3) interioribus sin- 

 gulis, ceteris binis; a latere visis tumore basali, a vertice oblon- 

 gis medio utrinque turaidis,- latitudine isthmi latitudine apicis modo 

 paullo minori ; pyrenoidibus binis. 



Hab. ad (( Pasto de Olaria » prope (( Pirassununga » in Bra- 

 silia Araerica3 australis, sociis Closterio lalerali, Closterio tur- 

 gido f. hrasiliensi, Closierio subturgido, Spirottunid obscurd et 

 Cosmario quaternario (A. Loefgren). — A C. Botrijtide pra3ci- 

 pue differt granulis binis, a C. subspecioso Nordst. et C. pi/cno- 

 chondro Nordst. crenis pluribus, forma turaoris basalis etc. Lat. 

 70-72 a., long. 8G-90 u.., lat. isthm. 20-21 fx., lat. apic. 21-24 p.., 

 crass. 42-46 /j.. 

 137. Cosmarium sublatum Nordst. Freshw. Alg. of N. Zeal. and Au- 2374 

 stral. p. 45 (ad interim) tab. 5, f. 1-4, Botaniska Notarisia 1887, 

 p. 159. — Magnum, subquadratum, profunde constrictum, sinu me- 

 diano lineari angusto intirao et extremo dilatato ; semicellulis re- 

 ctangularibus rariter sursum dilatatis, angulis inferioribus obtusis 

 vel obtuso-rotuudatis, superioribus rotundatis, lateribus vulgo rectis, 

 dorso late truncatis vel latissime rotundatis sa^pe medio levissime 



63 



