Conjugata?, Desmidiacese, Cosmarium. %0 



Subsectio II. Eucosmariuin (De-Bary) Hansg. s. str. Prodr. p. 249. — Ohloro- 

 phora bina (pyrenoides 2 foveutia) in utraque semicellula. 



J. Membrana levis vel subtiliter puncLulata. 



91. Cosmarium pyramidatum Breb. in Ralfs Brit. Desmld. p. 94, t. XV, 2328 

 f. 4, Liste p. 120, Rabenh. Krypt. Plor. v. Saclis. p. 198, Alg. n. 

 1348!, Fl. Eur. Algar. III, p. 162, Archer in Pritch. Inf. p. 731, 



t. III, f. 14 et t. V, f. 15, De-Not. Element. p. 40, n. 21, t. III, 

 f. 22 et 23, Wolle Desra. U. S. p. 69, t. 14, f. 16-17, Kirchn. Alg. 

 Schles. p. 149, Delp. Spec. Desm. Subalp. p. 129, t. 9, f. 30-33, Cooke 

 Brit. Desm. p. 86, t. 36, f. 13, Hansg. Prodr. p. 197, Cosmarmm 

 ovale Ralfs in Ann, Nat. Hist. XIV, 1844 p. 394 ex parte, Cos- 

 onarium 'pyramidalum b typicum Klebs Preuss. Desm. p. 31, t. 

 III, Piihiscus angulosus Kuetz. Phyc. germ. p. 129, Spec. p. 

 162. — Mediocre, 53-93 « 50-85, ovale vel subovale, utroque polo 

 truncatum, raedio profunde constrictum, isthmo 30-35 f/.. lato, sinu 

 lineari; semicellulis breviter pyramidatis, basi recta vel subrenifor- 

 rai, angulis inferioribus late rotundatis, apice (dorso) modo trunca- 

 tis modo rotundatis, a vertice late ellipticis; chlorophoris in utra- 

 que semicellula binis ; merabrana punctata vel subtilissime gra- 

 nulata. 



Hab. in stagnis, fossis, lacunis turfosis, in Italia {Nordstedt, 

 Delponte), Belgio (De-Wildeman), Gallia (Brbbisson, Petit), Vo- 

 gesis (Lemaire), Germania (Kirchner, Klebs, Rabenhorst), Au- 

 stria (Grunow), Britannia (Ralfs, Archer, Cooke), Suecia (Cle- 

 ve, Lundell), Norvegia (Nordstedt), Hungaria (Istvanffi), Bohe- 

 raia (Hansgirg), Fennia (Elfving), Dania (Jacobsen), America 

 boreali (Wood, Wolle), ad «Cupalen» in Republica Argentina 

 (Nordstedt) et in Brasilia Amer. austr. (Nordstedt), in Birmania 

 Asiae (Joshua). 



92. Cosmarium capense Nordst. De-Algis et Characeis Musei Lugduno- 2329 

 Batavi p. 6, f. 8, {Cosmarium pyramidalum subsp. capense). — 

 Cellulis 48-56 a. crassis, sinu mediano fere raox dilatato, 92-110 



* 60-72, isthrao 20-22 ^.. lato ; semicellulis raagis quam in Cos- 

 mario pyramidato cordiforraibus, angulis inferioribus raulto raa- 

 gis rotundatis, a vertice visis latissime 'ellipticis, a latere elliptico- 

 subovatis ; chlorophoris.... (annon parietalibus'?). 



Ilab. ad Utriculariam Ecklonii ad Caput Bonae Spei A- 

 fricse australis (Ecklon, Zeyher). 



