MONOGRAPHIE DES OSCILLARIÉES. 



169 



11. P. tenue. 



ÀNABAiNA TENuis Meneghini, Conspectus Algologiœ euganeœ, p. 8, 1837; e spe- 

 cim. authent. in herb. Lenormand! 



Leptothrix suBTiLissiMA Cesati in Rabenhorst, A/gen, n» 268!, 1853. 



OsciLLARiA DEïERSA Stizenberger in Rabenhorst, Algen, n» 1730!, 1864 (specim. 

 mancum) — Rabenhorst, Flora eur. Algar.,U, p. 96. 



Hypheothrix subtiltssima Rabenhorst, F/ora eu7\ Algar.^ II, p. 77, 1865. 



Planche IV, fig. 23 à 25. 



Slratumlaele aerugineum, tenue, membranaceiim, expan- 

 sum. Filaelongata, subrecta, dense intricala. Vaginae tenues, 

 inmucum fibrosumdemum diffluentes, chlorozincico iodurato 

 caerulescentes. Tricliomata laete aeruginosa, recta, ad geni- 

 cula leviter constricta, plerumque indistincte articuîata, 

 apice initio recta deinde uncinata et attenuata haud capi- 

 tata, 1 [A ad 2 [/. crassa ; articuli diametro tricliomatis ad 

 triplo longiores, 2,5 (i. ad 5 (x longi; protoplasma homo- 

 geneum ; cellula apicalis demum acute conica; calyptra 

 nulla (v. V.). 



Hab. aquaria inter Algas in cubiculo cultas^ aquas dulces 

 aut thermales, etiam terram humidam per Galliam !, Germa- 

 niam (Stizenberger !), Italiam in thermis Euganeis (Mene- 

 ghini î),apud Vercellas (Cesati!) etPadovam (herb. de Toni!), 

 necnon Novam Angliam (Farlow in herb. Thuret!, Anderson 

 in herb. Setcheli !). 



12. P. subulî forme. 



Hypheothrix laminosa Grunow, Algen von der Weltreise der Novara, p. 29, 1868. 



Planche IV, fig. 26. 



Slratum luteo-viride, lamellosum. Vaginae inmucum gela- 

 tinosum amorphum chlorozincico iodurato non ca^rules- 

 centem protinus diffluentes. Trichomata aeruginosa, recta, 

 ad genicula constricta, distincte articulata, apice longe 

 attenuata arcuata vel tortuosa haud capitata, 2 jj. ad 2,8 

 crassa ; articuli diametro tricliomatis ad quadruplo lon- 

 giores, 6 (X ad 8 (X longi; protoplasma homogeneum, tlocco- 



