562 Myxophycese, Scytonemaceae, Tolypothrix. 



tibus 9-11 p^. crassis, torulosis, olivaceis; articulis diain. 2-8-plo 

 brevioribus; heterocystis basilaribus singiilis, rarius binis. 



Hah. ad truncos et ligna in Anglia (Berkeley), Gallia, prsBci- 

 pue meridionali (Lamy de la Chapelle, Bornet, Flahault), Hel- 

 vetia (Hepp), Italia (Bornet, Cesati, Balsamo, Macchiati, De Toni, 

 Casali, Forti), Tyrolia (Hausmann), Algeria, Tunisia (Durieu, 

 Sauvageau), America foederata (Ravenel, Wolle, Setchell, Col- 

 lins), insula Borneo (Leveille), Camerun Africa (Nordstedt), ins. 

 Dominica (West). — Sporae, sec. Macchiati, soIitari;ie aut plerum- 

 que plurimae seriatse, articulis vegetativis multo longiores, elli- 

 psoidege, contentu viridi-flavescente farctte. — Forma saxicola Gru- 

 now in Born. et Flah. Rev. HI, p. 177: filis 14-18 (x. crassis; 

 vaginis s^iepe striato-corrugatis, trichomatibus 12 [x. crassis. — Ad 

 terram et rupes verticales Gallise meridionalis (Flahault), Au- 

 strise (Hausmann), Angliae (Harvey, Berkeley, Cooke, Lamy de 

 la Chapelle), Amer. bor. (Saunders). — A Tolypotriche hyssoidea 

 forma saxicola Grun. vix abludit Scytonema Asphalti Fior. Mazz. 

 in Atti Acc. Pontif. N. Linc. 1860, pag. 260, fig. 6, sequenti 

 modo descriptum: Filis rigidis simplicibus (ex icone pseudoramo- 

 sis!!) ad instar straguli supra rupes protensis, vaginoe diam, 24 

 {X., materie gonimica multiformi hinc inde annulata, colore melleo. 

 Supra rupes exsudantes Asphaltum lata picea strata conficit. — 

 Ad Filillinum in Apennini montibus (Rolli). 



17. Tolypothrix Bouteillei (Breb. et Desm.), Hassallia Bouf eillei (Breh. 1279 

 et Desm.) Born. et Flah. Rev. III, p. 116, Sirosiphon Bouteillei 

 Breb. et Desm. PI. crypt. de France, ser. II, n. 140, Desmaz. 

 Vingt-troisieme notice sur les plantes cryptog. de France in Ann. 

 de sc. nat. V serie, Bot., IV, p. 124, Moug. et Nestl. Stirpes crypt. 

 Vog. rhen. n. 1368! Rab. Fl. europ. Algar. II, p. 285, Hapalosi- 

 phon Boutellei Borzi Morf. in N. Bot. ital. XI, pag. 384 (1879), 

 Stigonema Bouteillei Cooke Brit. Freshw. Alg. p. 271, t. CX, f. 3, 

 Hansg. Prodr. II, p. 25. — Strato csespitoso, immerso, orbiculari, 

 atro-fusco, usque ad 2 millim. lato; filis 1 millim. longis, 5-7 [x. 

 crassis, pseudoramosis; pseudoramis facillime deciduis; vaginis 

 arctis, tenuissimis, aureo-fuscis vel hyalinis, fragilissimis, tubu- 

 losis, continuis; trichomatibus 4-5 [j.. crassis, torulosis, olivaceis; 

 articulis diametro paulo brevioribus; heterocystis basilaribus, soli- 

 tariis, aureis. 



Hah. in rupibus verticalibus cretaceis Gallice septentrionalis 

 apud Magny-en-Vexin (Bouteille, Beauvais, Blainville), Crevon 



