Tctrasporiiiir, l)ic(,yotacea\ 225 



f. IT. — Fn>n(lil)us H-S ciii. fnoiinuiiKiiuua ad sesquidecimetruni) 

 alLis, scta porciua duplo crassioribus, lilirormibus, basi apicequc 

 leuiter attenuatis, iucurvis, quoquoversuui ramis lateralibus (pro- 

 liferatioue e scaphidiis egredientibus) obsitis. 



Hah. ad H o r ni o s i r a ni aliasque F u c a c e a s ad oras Nova? Ze- 



Iandi;o et Tasinani;e (Wilkes, Hauvey, Ijeuggren, J. Agardm), ad 



« Tort Cooper, penins. IJanks » (Lyall) et « Pariniahu » (Colenso). 



— Color frondis pallide olivaceus, siccitate nigrescens, suhstantia 



subcoriacea, in sicco rigida et fragilis. 



Ordo II. Tetrasporinae. 



TetrasporoKe. Dc Toni [1891] Syst. Ucbe)'S. Fucoid. p. 175. 



Thallus semper pluricellularis, magnitudine mediocris, sa3pius 

 niembranaceo-planus, simplex, lobatus ramosusve, sa^pissinie erectus, 

 rarius matrici liorizontaliter adha?rcns. 



Propagatio tetrasporis. 



Gencratio oosphceris immobilibus spermatiorum (corpusculorum 

 masculorum ciliis carentium ') ) ope foccundatis. 



Familia V. DICTYOTACEiB (Laraour.) Zanard. ') 



Dictyotaccde Lamour. [180.^] E>:pos. car. Dict. in Journal dc botauique Tom. H, 



Zaiiard. [1843] Sag-gio classif. tic. p. 10. 

 DHi/oicte Trev. [1849] in Linna^a XXII, pag. 421 (cx.c]. gcn. plui-.). 

 Characteres ordinis. 



Conspectus generum 



I. Frondes lineis innovationis zonata^ aut in inferiori sua parte sa^pc pro- 

 stratae et iii superiori adscendentes aut tota3 erectiusculas complanatte. 

 Cryptostomata nuUa. 



') Cfr. notulam 3 pag. 2. 



-') Cfr. J. Agardh Till Algern. System. IL 1872 (Zonaria), V. 1880'(Dictyotc») 

 & Analecta Algologica 1894; F. Cohn Ueb.ein. Algen aus Helgoland, insbesond. 

 Dictyota &c. 18u5; P. L. & H. M. Crouan Obs. micr. Dictyotees 1857; G. M. 

 Giles On the Prothallus of Padina 1885; T. Johnson in Journ. Linn. Soc, Bo- 

 tany, vol. XXVII, 1890, p. 463-470; J. Reinke in Bot. Zeituug 1877, n. 29 & Ent- 

 wick. Unters. Dictyot. Golf. v. Neapel 1878; G. Thuret in Ann. Sc. Nat., Bot., 

 4 ser., T. III, 1855; G. Thuret & E. Bornet Etudcs phycologiques 1878; V. Tre- 

 visan De Dictyotcis adumbratio 1849. 



15 



