CYSTOSIRE^. 387 



spiraliter alternis; foliis dichotome divisis, linearibus aut setaceis, ob 

 nervum praesentem exstantem([ue tri([uetris aut planiusculis ; vesi- 

 culis sphairicis plerumque muticis, petiolo plano sutfuUis; receptaculis 

 axillaribus cylindraceis tuberculosis, dichotome aut furcato-ramosis, 

 foliolo ])racteali simpUci stipatis; sporis ovoideis magnis, perisporio 

 amplo receptis, hmbo Mo cinctis. 



Hab. In oris omnium iusularum Fortunatarum vulgare, preesertim 

 vero prope portum qui Gando audit, in Canaria : Despreaux, et ad 

 promontorium Punta de Teno dictum : Webh et Bertuelot. — Kc, 

 Spec. Alg., p. 616. 



Syn. Fucus cornosus PoiRET, EncycL Meth. Bot., Suppleni., VIII, 

 p. 375. — F. BesfontainesiiTm^., Hist. Fucor., III, t. 190. — Sar- 

 gassum Desfontainesii L Ag., Spec. Alg., 1, p. 339. 



1399. S. POLYPORUM M., — Ceut. III, n" 55, et Bonite, p. ^5. — 

 caule anguloso in spiram contorto, foliis petiohsque vesicularum poris 

 giandulosis iimumeris onustis, ramis confertis spirahter ahernis ; fohis 

 basi hinc dentatis pinnatifido-laciniatis , laciniis linearibus ahernis 

 subintegerrimis, ob poros confertos secus nervum continuum utrin- 

 que uniseriales regulariter punctatis ; vesicuhs pisum sequantibus 

 spha?ricis muticis, petiolo longoplano nervoso ghmduloso fuhis; recep- 

 tacuUs immaturis racemose dichotomis fihformibus subtorulosis. 



Hab. In mari Sinensi et prope Macao : Gaudichauu. — Kg., Spec. 

 Alg.,Y). 607. — .1. Ag.. Spec, 1, p. 3^6. 



* S. compactum Bory, — Coquille, p. 126, et M., FL C/iiL VIII, 

 p. 23/i, ubi descriptio. — caule fihformi, undique ramos breves foho- 

 sissimos emittente ; foliis o])longis vel ovato-lanceolatis undulato- 

 crispis petioloque brevissimo irregulariter dentatis, nervo evanescente 

 percursis, sparsim glandulosis; aerocystis minutis spliaericis nmticis, 

 petiolo tereti ipsis breviore fultis; receptaculis teretibus furcato-ra- 

 mosis cymosis, petiolovesicularuminsidentibus, apice compresso dila- 

 tato crasse dentato-spinosis. 



Hab. Ad oras Chilenses : d'Urville. 



Syn. Sargassum complicatuni Bory, mss., in Collectione Urvilliana. 



*S. PACiFicuM Boky,— Coquillc, p. 123, et M., FL ChiL,y\\\, 

 p. 235, ubi descriptio. — caule filiformi, uudique ramoso, ramis adpres- 



