PlKKiOZoospoiMiicU, Laininnriaccao, Noivocystis. 3*37 



Oceani Parilici septeiitriiMialis (AVosniossenski); iid littus {'alir<)riii;e 

 (C. L. Andei{Son). 



PELAGOPHYCUS Arcsch. [1881] iii Botaiiiska Notiser 1881, p. 40, Ob- 

 serv. pliycol. V (1884), p. 6 (Etym. pelcKjos pelao-us et p//i/(vs fiicus), 

 ])e Toni Syst. Uebers. Fucoid. 1891, p. 177, Kjellni. in Kng!. & Praiiti 

 Natiirl. Pflanzenfam. 1)7. Lief. p. 259, Nereocjjstidis sp. Arescli. 



— Radix raniosa?; truncus longissimus, in aqna teres (siccus com- 

 pressus) basi attenuatus et farctus, longe subfiliforniis, dein cavus 

 et apice in vesiculam conspicuam in apicis centro quatuor lami- 

 nas (folia) giganteas petiolatas margineque ciliatas gerentem desi- 

 nens; petioli in sectione transversali orbem lacunarum ostendentes, 

 compressi et iarcti. Sporangia ina^qualia, majora et minora, una 

 cnni paraphysibus fasciam ampliuscuhim in laminarum superlicie 

 efficientia. 



1. Pelagophycus gigaiiteus Aresch. in Botaniska Notiser 1881, p. 49, ^09 

 Observ. phycol. V, p. 6, Nereocystis gigantea Aresch. in ]3otaniska 

 Notiser 1876, p. 71, Farl. in Bull. Torrey Bot. Club XVI n. T. p. 7. 



— Characteres generis. 



Hal). in mari australi prope Sanctum Franciscum (D'". Eisen) 

 et circa Sanctam Crucem (C. L. Anderson), prope « S. Diego » et 

 «Todas Santos Bay» (Orcutt, Cleveland, Eigenmann, Farlow). — 

 Truncus (basi non visa) 2 metr., 65 cm. circiter longus; vesicula 

 laminas ferens 6 (-12) cm. longa, 3 cm. lata; petioli ad 25 cni. 

 longi; lamina; foliacese 5-6 inetra et ultra longte, 35-37 cm. lataj. 



NEREOCYSTIS Post. et Rupr. [1840] Illustr. alg. p. 9, t. 39, f. 26- 

 30 (Etym. Nereos nomen mithologicum et cysiis vesica), Kuetz. Sp. 

 p. 584, J. Ag. Sp. I, p. 148, Aresch. Observ. Phycol. V, p. 5, De Toni 

 Syst. Uebers. Fucoid. 1891, p. 177, Kjellm. in Engl. & Prantl Natiirl. 

 Pflanzenfam. 97. Lief. p. 259, Ulva', La/ni/iapia3 et Fuci sp. auct. 

 veter. — Radix ramosa. Truncus simplex, teres, a basi lequaliter fili- 

 formis, apice vesiculam ovalem gerens; medulla in inferiori tenuiori- 

 que parte trunci in sectione transversali elliptica, canalibus circum- 

 data et orbis irregularis lacunarum muciferarum intra interioreni cor- 

 ticem; vesicula in apice trunci jam injuvenili planta evoluta apice 

 folium gerens dein divisum in duas laminas, unam ad dexteram , al- 

 teram ad sinistram (quarum utriusque iterata divisione denique fa- 

 sciculus laminarum efformatur). Laminte numerosissimte, s^epe ad 



