MONOGRAPIHE DES OSGILLARIÉES. 



207 



OsciLLAniA PRiNCEPS, d CRAssissiMA Rabenhorst, Flora eur. Algar., Il, p. 112, 1865. 



OsciLLATORiA iMPERAïOR Wood, Prodromus of a study of the freshvmter Algse of 

 eastern north America, iii Proceed. oflhe amer.^ philosopfi. Soc, XI, p. 124, 1869; 

 A contribution to the history of tJie f'reshwater Algœ of north America in Srnith- 

 sonians contributions to Knowledge, p. 20. — Wolle, Freshvmter Algœ of the United 

 States, p. 317 et pl. CCCVIII, fig. 3-4, et in Rabenhorst, Algen, 2535! — Weber 

 van Bosse in Hauck et Richter, Phykotheka universalis, n° 398 ! 



OsciLLARiA PRINCEPS, var. CYANOGENA de Notads in Erhar. crittogam. ilal., série II, 

 no 482! 1871. 



OsciLLARiA iMPERATOR, ^ BR AsiLiENSis, Nordstcdt in Wittrocli et Nordstedt, Algx 

 aq. dulc. exsicc, fasc. X, n» 494;, 1882. 



P/a7îche YI, fig. 9. 



Tricliomala saturate aeruginea, in straliim atro-viride 

 agglomerata, recla, rigida, siccitate fragilia, non torulosa, 

 16 p. ad 60 [j., vulgo 25 ad 50 [j. crassa, apice leviter alte- 

 nuato plus minusve uncinata et quasi truncata, subcapitata; 

 articuli in tenuioribus trichomalibus quartam diametri par- 

 tem, incrassioribustanlummodo undecimam arquantes, 3,5 [f. 

 ad 7 [A longi, protoplasmate tenui-granuloso, rarius plus 

 minusve grosse granuloso uniformiter farcti; dissepimenta 

 nunquam granulata ; cellula apicalis superne convexa; ca- 

 lyptra nulla (v. v.). 



Hab., primum limo affîxa, deinde natans, aquas limpidas 

 quietas aut lente fluentes, frigidas aut thermales, verisimi- 

 liter per totum orbem. regionibus frigidioribus exceptis, 

 certe, e speciminibus visis, per lotam Galliam (Bory!, Bré- 

 bisson!, Durieu!, Grateloup îinherb. Thuret ; Libert ! Lloyd 1 

 Mougeol! et ipse.), Germaniam centralem (Babenliorst, 

 Algen!, Richter, Phykotheka universalis!) et meridionalem 

 (Stizenberger !), Helvetiam (Vaucher), Hungariam (Grunow 

 in herb. Thuret î), llaliam (Meneghini!, de Notaris!, 

 Arcangeli î), insulas Ceylonem (Grunow in herb. Thuret!, 

 Ferguson, Ceylon Algte!), Sumatram (\>'eber van Bosse!), 

 Javam (herb. Lenormand !) et l^orbonicam (Bory in herb. 

 Thuret!), Americam fœderatam (Farlow !, Wolle!, Collins 

 Holden !), Guadalupam (Ma/6 et Schramn in herb. Crouan!) 

 et Brasiliam (Lofgren in \Mtlrock et Nordsledl, Alga^ aq. 

 dulc. exsicc. !). 



