MONOGRAPHIE DES OSCILLAKIÉES. 



219 



OsciLLARiA LiMOSA, ô AMETHYSTEO-CHALYBEA Kutziiig, Spccics Algai\. p. 243, 1849; 

 e specim. authent. in herb. Thuret! 



OsciLLARiA NiGRA, [i Brebissonii KOtzing, Species Algar., p. 245,1849 (pro parte); 

 e specim. authent. in herb. Thuret! — Mougeot et Nestler, Stirp. cryptog. vogeso- 

 rhenanx^ n» 1491 ! 



OsciLLARfA LIMOSA, var. ALLOCMROA Mougcot et Nestler, Slirp. cryptog. vogeso- 

 rhenanx, n» 1378!, 1854. 



OsciLLARiA LïMOSA, vaF, CHALYBEA, Rabenhorst, Algen, n» 777 !, 1858. 



OsciLLARiA NiGRA var. NEBULOSA Brébisson in Rabenhorst, Algen, n° 2177!, 1890. 



OsciLLARiA RUBESCENS Richter in Hauck et Richter, Pliykotheka universalis, 

 no 4761, 1892 — (non de Caudolle). 



Planche YI, fig. 22 et 23. 



Stratum nigro-chalybeum. Tricliomata livide purpiireo- 

 clialybea (sec. Kûtzing), in speciminibus siccis hyalina vel 

 pallide caerulea, recta, flexilia, non lorulosa, 6 ad 11 (x 

 crassa, apice haud atlenuata subcapitata admodum recta; 

 articuli quadrati vel diametro ad dupio breviores, 4 ad 

 11 [X longi ; protoplasma in speciminibus siccis pellucidum, 

 vix granulosum ; dissepimenta passim granulis protoplas- 

 malicis crassis notata; membrana cellulae apicalis siiperne 

 convexa, evidenter incrassala (v. v.). 



Hab. aquas quietas aut fluentes, fossas, rivulos, etiam 

 rupes madidas Gallise orienlalis (Mougeot et Nestler, Stirpes ! , 

 Demangeon in herb. Thuret!), occidentalis (Brébisson!, 

 Pelvet in herb. Thuret!), centralis (Durieu in herb. Thuret!), 

 et meridionalis prope Millau !, Germanise (Kemmler in 

 Rabenhorst Algenl, Richter in Hauck et Richter, Phy- 

 kotheka universalis !) et Helvetiae prope Berne (Kûtzing in 

 herb. Montagne!). 



17. O. simplicissiiiia. 



OscfLLATORiA TENUis, forma /ERUGiNOSA Sautcr in Rabenhorst, Algen, no 2383!, 

 1874. 



Planche VU, fig. 1. 



Slratum nigro-œruginosum. Tricliomata luteole aeruginea, 

 recla, elongala, Uexilia, ad genicula non constricla, 8 u. ad 

 8,6 yj. crassa, apice recta neque atliMUiala neque capitala : 

 articuli diametro Irichomalis dupio ad ([uachniplo breviores. 



