1544 Eu-Floi-idese, Grateloupiaceas, Haljaiienia. 



4. Frondis cellulse exteriores plus minus gelatinoso-tumentes, in frondem aut 

 magis membranaceo-trigonam conjunctge aut magis diiftuentes frondem quasi 

 jugis longitudinalious tri-quadrialatam constituentes. 



10. Halymenia decipiens J. Ag. Sp. II, p. 200, Epicr. p. 136, Anal. ^^^* 

 algol. (1892) p. 57, Ardiss. Phyc. Medit. I, pag. 151, Halyraenia 

 trigona Ag. Sp. I, p. 211 (partim), Isymeviia decipiens J. Ag. Anal. 

 algol. cont. V (1899) p. 65. — Fronde teretiuscula, gelatinosa, di- 

 chotomo-decomposita fastigiata, sursum longe at pariim conspicue 

 attenuata, segmentis supra sinus rotundatos erectiusculis, termi- 

 nalibus vix angustioribus sa^pe furcatis obtusiusculis. 



Hab. in oceano Athmtico ad Gades Hispani;ie (Cabrera.) ; etiam 

 in mari Mediterraneo lecta dicitur, e. gr. ad « Spezia » (Piccone) 

 et « Portici » (Mazza.) nisi cum H. trigona confnsQ,; vix eadem ad 

 littus Floridanum Americae borealis (Melvill sec. J. Agardh, 

 Farlow). — Frons fere ad decimetrum longa, pennre corvinae in- 

 • ferne crassitiem metiens, sursum parum attenuata, omnino videtur 

 cylindrica, repetite dichotoma. Segmenta supra sinus angustos at 

 rotundatos erecta et adproximata, terminalia vix tenuiora cylin- 

 dracea et obtusa. Fila interiora elongata sat densa; celluhe inter- 

 medise transversales oblongse; periphericae verticales oblong^e. Co- 

 lor flavo-rubens pellucidus. Substantia tenue membranacea et 

 gelatinosa ita ut specimina exsiccatione chartae arctissime ad- 

 hfereant. 



11. Haiymenia trigona (Clem.) Ag. Sp. I, pag. 211 partim, J. Ag. 2405 

 Sp. II, p. 201, Epicr. p. 137, Ardiss. Phyc. Medit. I, p 153, Born. 

 Alg. Schousb. p. 337, Fucus trigonus Clem. Ensayo p. 318 (fide 



sp. a Cabrera mlss.), Halymenia trigona var. cartilaginea Ag. 

 Sp. Alg. p. 211!, Halarachnion trigonurn Kuetz. Sp. p. 722?, Ha- 

 lymenia cystophora Ardiss. Florid. ital. I, 4, t. 14, f. 9-11, Fur^- 

 cellaria ? dichotoma Ardiss. Florid. ital. I, 4, t. 43, f. 15, II, 1, 

 p. 64, Fucus spathcBformis Esper (sec. C Agardh) (non Halyme- 

 nia trigona Kuetz. Tab. Phyc. XVI, t. 90 qu;e icon forsan Sci- 

 naice speciem repnesentat), Isymenia trigona J. Ag. Anal. algol. 

 cont. V (1899) pag. 67. — Fronde supra stipitem subdistinctum 

 cylindraceo-compressa, geLatinoso-membranacea subcartilaginea, di- 

 trichotoma fastigiata, segmentis collabentibus sublinearibus infra 

 dichotomias subcuneatis, apicibus obtusis. 



Hah. in oceano AtLantico ad Gades Hispanise (Cabreka); ad 

 littora Gallaeciae, absque indicatione loci (J. Agardh); ad Tingin 



