206 



ED. BORIVET ET €H. FLAHAULT. 



NosTOC SALSUM Kùtzing, forma luteo-fusga Rabenhorst, Flora europ. Algar., II, 

 p. 171, 1865. 



NosTOC ALPiNUM, var. MASTiGOTRiciiDM Rabcnliorst, Flora europ. Algar., II, p. 175, 

 1865. 



NosTOC COMMUNE Vaucher c. Beilscumiedianum Rabenhorst, Flora europ. Algar., II, 

 p. 176, 1865. 



NosToc COMMUNE Vauclicr b. pellucidum Rabenhorst, Flora europ. Algar., II, p. 176, 

 1865. 



NosToc VERRUCOSUM Vaucher b. fuscum Rabenhorst, Flora europ. Algar., II, p. 177, 

 1865. 



NosTOC sph.î;roides Ililse in Rabenhorst, Algen, n° 1831!, 1866. 



NosToc pisciNALE Rabenhorst, Algen, n° 2154! (n" 2160 in schechila), 1870; — (non 



Kiitzing, nec alioruiii, nec Rabenhorst's Algen, n° 1357 b). 

 NosTOC sp'h/ericu.m Rabenhorst, Algen, n" 2153 !, 1870. 



NosTOC KuRziANUM Zelicr in Kurz, Algœ collected in Arracan, etc. (Journal of Asiatic 



Soc. ofBengal, 1873, XLII, part. II, p. 179. 

 NosTOC ULVACEUM Kutzing in Mandon, Plantœ Aiidium Boliviensium, n° 1818! 



Thallo gelatinoso firmo, primum globoso, dein applanato 

 difformi, demum in laminas undulaLo-plicalas, carnosas vel 

 membranaceas, intégras vel laciniatas, sœpe pertusas, super- 

 ficie coriaceas explanato, colore serugineo, olivaceo vel fusco; 

 filis flexuosis intricatis; vaginis exterioribus plerumquefusces- 

 centibus, interioribus plus minus distinctis saspius hyalinis; 

 trichoraalibus 4,5-6, sœpius 5 [x, crassis, articulis sphœrico- 

 depressis vel doliiformibus; heterocysLis 7 [i. crassis subsphiîe- 

 ricis sgepe ternis quinisve; sporis haud notis (v. v.), 



Hab. ad terram in locis udis nemorum et pratorum, nec 

 non in fossis et lacunis aqua plnviali repletis, e regionibus 

 arcticis usque ad terras calidiores totius orbis. 



Var. p. flagellifoE'iue 



NosTOC FLAGELL1F0RME Berkeley et Cortis in Wright, Plantœ Texanœ, n' 3809!; — 

 Berkeley, Introduction to cnjptog. Bolany, p. 142, 1857; — Harvey, Nereis Boreali- 

 Americana, III, p. 115; — Farlow, Anderson et Eaton, Algœ exsicc. Americœ borea- 

 lis, n° 100!; — Bornet et Thuret, Notes algologiques, p. 121. 



Nematonostoc uiiizcMORPHoiDEs Nylander in Bulletin de la Soc. bot. de France, 1873, 

 XX, p. 263. 



NosToc commu.ne, forma flagelliformis Flahault in Bulletin de la Soc. bot. de France, 

 1883, XXX, p. 80, tab. II. 



Thallo filiformi passim usque ad 3-4 millim. lato, firmo, 

 trichomatibus parallelis. 



Hab. in locis aridis Galli;ic in Pyrenceis prope Bagnères de 

 Luchon (Dupuy !), Montpellier!, in America ad San-Pedro^ 



