Myxopli3'ceae, HeterocystideEe, Wollea. 431 



Genus incertum, verisimillime idem ac Nostoc. 



PHYLLODERMA Suring. [1872J Illustr. Alg. Jap. II p. 71, t. 22-23 

 (Etym. phyllon folium et derma cutis). — Cellulre phycochroma- 

 tica?, parietibus crassis, gelatinosis fdivisione certis intervallis in 

 tres, sed pnecipue in duas regiones divergente) in series dichotomas 

 flabellatim dispositce, in phylhi horizontalia, diverse directa et den- 

 sissime in stratum planum lamellosuin intertexta, concrette. 



1. Phylloderma sacrum Suring. 1. c — Strato late expanso, sicco 1003 

 chartaceo-nigro, madefacto valde inflato, ehastice gelatinoso, c;erule- 

 scente-viridi, ad '/, cm. fequaliter crasso, superficie kevissima aut 

 leviter exsculpta, intus multilamelloso; phyliis lenticularibus ro- 

 tundis et oblongis demum diffusis; cellulis superne compressis, 

 contentis (gonidiis) lenticularibus, superne visis rotundis, diam. 

 3,5-6 [X., fere reticulatim dispositis, distantibus, subinde per paria 

 aut quaternatim approximatis, ad margines et in superflcie phyl- 

 lorum, ut in totis phyllis junioribus, magis approximatis, dicho- 

 tome flabellatis, in sectione verticali strati distinctius, versus 

 margines dichotome, seriatis, ellipticis diametro minori (verticalij 

 2,3 [i..; parietibus crassis, hyalinis, ad latera (superne visis) in ge- 

 latinam continuam confluentibus, in sectione verticali compressio- 

 ribus, ibique lineis parallelis tenuissimis, gonidiorum series inclu- 

 dentibus, distinctius limitatis. 



Hab. in fluviis et piscinis montanis Japoniie, lapidibus sub- 

 mersis affixum (Suringar). — Obs. Verisimiflime icon a cl. Surin- 

 gar exhibita reprsesentat statum Nostochis cujusdam (forsan N. 

 ediilis aut A^. verrucosi) peculiari confectionis modo, ut alga edu- 

 lis fiat, dissolutum. Est certe Myxophycea, nullo negotio a Pal- 

 mophyllo, quocum comparavit eximius Suringar, distinguenda: Pal- 

 mophylli species omnes hucusque cognitae aquas marinas inhabi- 

 tant. Nec cum Entophysali genus Suringarii comparare licet. 



WOLLEA Born. et Flali. [1888] Revision des Nostoc. heteroc. IV, 

 p. 233 (Etym. a cl. Fr. Wolle), Sphmrozijgce sp. Wolle. — Thallus 

 tubulosus, cylindricus, submembranaceus, mollis; fihi subrecta, pa- 

 ralleliter agglutinata v. leniter curvato-implicata, vaginis confluen- 

 tibus; heterocystae intercalares; sporiB cateuatge, heterocystis con- 

 tigua) vel ab eis remotse. 



