ioO SOCIETE [iOTANIQUE DE FRANCE. 



M. Gosson presente a la Societe un J uncus nouveau pour la flore 



de France, recueilli, par M. A. Guillon, dans les Pyrenees-Orien- 

 tales, apres la session extraordinaire de 1872, et fait la communi- 

 cation suivante : 



DE JUNCO IN GALLIA RECENTlUS OBSERVATO, auctore E. €OS»i»0.^. 



JUNCU9 BALTICUS Detll. ? 



Caudex crassiusculus, horizonialiter repens. Caules distantes vcl subap- 

 proximati, 3-6 decim. longi, erecti, teretes, statu sicco obsolete striatic enodeSj 

 durlusculi, lenaces, medulla conlinua farcti, nudi, foliis omnibus radicalibus 

 ad vaginas aphyllas lestaceo-fuscas niliclas limbo destUiilas vel supcriores 

 limbo brevissiuioselaceo mucroniformi donatas redaetis. Inflorescentiapseudo- 

 lateralis neinpe folio bracteali elongato cauli simili ejus processum nieniientc 

 longc superata. Flares plures vel plurimi^ breviter pcdiccliali vel subsessiles, 

 basi squaniis byalinissordide albidu-fuscescentibus slipatij cymoso-corymhosi^ 



cymaeramis inaequalibus, corymbum saltern in statu juiiiore confertum offi- 



cieiitibus. Perianthii phylla fusco-nigresceuiia, dorso pallida, margine mem- 

 branacea, subae/pialia, oblongo-lanceolata, mncronata, Stamina^^ perianthio 

 subdimiJio breviora, filameniis crassis anlhera subquadruplo brevioribus. 

 Stylus stigmatibus sub (e qui long us. Capsula (junior) ovato-oblonga obtuse 

 subtrigona, mucronulala, perianthii phyllis brevior. Semina.... 



Hanc plantam in Gallia nondum nolam, in Pyrenaeis- oric/italibus, in pa- 

 lude parva juxta arcem Mont-Louis, amicissimus A. Guillon detcxit, etdeflo- 

 ralam 15 julii 1872 legit. 



Caudice horizonialiter repente notisque plurimis ad J. arcticum Willd. 

 planta Pyrenaica accedens, exirnie differt infloresccntia pluri- vel mtlltiflora et 

 perianthii phyllis omnibus oblongo-lanceolatis mucronalis, inlcrloribus non 

 ovatis obtusis. Referenda videtur ad J. Balticum Deih. (in Willd.; Laharpe 

 Jonc, 26 ; E. Mey. June. 15; Koch5?/n. Germ, ed. 2, 839; Kunlh Enum* 

 III, 317; Rcbb. Ic. Germ. IX, L /ill, f. 917. — /. helodes Link Enian. I, 

 305. — J, arcticus Engl. Bot,i. 2631 non AVilld.), scd capsula matura 

 seminibusque deficientibus aliquid dubium superest. *— J, Balticus hucusque 

 observatus fuit in Scotia (Bennett, Syme), in Orcadum insula Leivis{i. Ball), 

 in Germania boreali ad mare Sepfentrionale et mare Ballicuiii (Rchb. exs- 

 n. 156), Dania (Lange), Suecia (LefBer), Lapponia (Fellman exs. n. 2^a), Rossia 

 media (Riihltwein) ot arctica (herb. Bungc), Lusitania (sec. Linksed dubia 

 civis), Terra-J^ova, Unalaskaj promontorio Espenberg, Kamtchatka (sec. 

 Kunlh), in Americae borealis provinciis J/«>/^?*^an(Engeiman \\Qvh.Junc. n. 2, 

 3), Pennsylvania (Engclm. loc. cit., n. lx),Saskatchawan (Bourgeau), Sierra 

 A6'i;a^a (Bolander in Engclm. loc. cit., n. 5), Colorado Territory (Hall et 

 Harbour exs. n. 567). 



