210 Eu-FloridecT?, Gigartinea3, Gigartina. 



Hah. in oceano Australi ad insulam «Akaroa» (D'Urville) et 

 ad littas Tasmania3 imprimis ad « Brown's River » lecta (R. Gunn, 

 Lyall) — Frondes e callo discoideo exiguo exsurgunt aggregat:ie, 

 e basi filiformi lineares, mox compressaB, plerumque 1-3 millim. 

 lata-, leviter canaliculatre, ita ut segmentum horizontaliter posi- 

 tum'reniforme appareat, post intervallum lineirc nudum pluries 

 pinnata3 aut fasciculato-ramosse. Pinn^e pinnulfe<iue altornaj, oppo- 

 sitifi, etiam subvaga^, immo fasciculatim congesta^, basi attenuat;e, 

 ultimi ordinis uncinato-incurv^ subfiliformes. Quoad structuram 

 frons pnebet fila tubulosa, hyaUna, articulata, materie colorata farcta 

 in cellulas ad speciem polygonas anastomosantia et peripheriam 

 versus in alia fila horizontalia subcylindrica breviter articulata den- 

 sissime stipata abeuntia. Substantia cartilaginea, sicca cornea. Color 

 caulis oUvaceus, pinnarum pinnulanimque amcene violaceus. 

 41 Gigartina tuberculosa (Hook. et Harv.) Grun. in Piccone Alghe 423 

 del Viao-gio della « Vettor Pisani » (1887) p. 58, n. 129, Hariot 

 Algues de la Mission du Cap Horn p. 68, Cliondras tuberculosus 

 Hook. et Harv. Crypt. antarct. I, p. 76, Flora antarctica p. 188, 

 J. Ag. Sp. II, p. 248, Nothogenia tuherculosa Kuetz. Sp. Algar. 

 p. 793, Tab. Phyc. XIX, t. 42, f. c-d. - Fronde cartilaginea, basi 

 cuneat'i, late lineari, furcati v. ter quaterve dichotoma, plana v. 

 canaliculata, laciniis patentibus obtusis, axillis rotundatis; cystocar- 

 piis sph;eroideis, pagina frondis superiore exstantibus, medio depres- 

 sis, demum pertusis, massam c.irposporarum rosearum includentibus. 

 ' Hah. ad insulas «Aucldand»; in freto magellanico (Hariot, 

 Piccone). — Frons mediocris, basi simplex, superne plus minusve 

 furcata, margine simplici pinnulisve ornata. Lacini:e plan^ie v. pa- 

 gina sJperiore canaliculata, patentes v. divaricatffi, sursum latiores, 

 obtus^. Cystocarpia verructeformia numerosissima, magnitudine se- 

 niinis Brassicw, globosa, latere concavo frondis sita, exstantia, 

 r:irius pagina frondis immersa, basi constricta, apice depressa vel 

 umbilic;it:I siccitate aputlieciuiu Lichonis referentia, demum pertusa. 

 Carposporce minutce. Substanti:i cr:issa, c:u-noso-c:irtilaginea, sicci- 

 tate valde contr:icta. Color lividus. Speciinina exsiccatione ch:irt8e 

 l:ixe adhjerenf. 

 42 Gigartlna canaliculata Harv. in Hooker Bot. of Beechey Voy:xge 424 

 p. 490, J. Ag. Sp. II, p. 272, Epicr. p. 198, Harv. Ner. bor. Amer. 

 p. 174, t. 27 C, Chondroclonium canaliculatum Kuetz. Sp. p. 741, 

 Tab. Pliyc. XVI I, t. 09, f. c~e, Sphcerococcus Lindleyanus J. Ag. 

 Synib. 1, p. 16. — Fronde iiinc convex;i, illinc c:in:Uiculat:i, lineari, 



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