6 Cyclosporinse, Sargassacese, Sarg-assum. 



§ Vesiculfe ut organa propria discretae prfflsentes.Folia in ramos haud 

 abeuntia. 

 Cystophora J. Ag. — Vesicula^ liaud septata^, spliaerica^ vel ellipsoideae. 

 Halidrys Lyngb. — Vesiculae septat;B, siliquaeformes. 



§§ Vesiculae ut organa proprialiaud discretcTe. Folia in ramos abeuntin. 



a. Corpus rhizomatiforme in fronde liand pr;rsens. 

 Cystophyllum J. Ag. — Inflationes vesiculieformes in ramulorum apicc tan- 



tum sit8G. 

 Cystoseira Ag. — Inflationes vesiculaeformes liaud terminales. 



b. Corpus rhizomatiforme in fronde praesens. 

 Bifurcaria Staclvh. — Frons hinc inde louge vesiculoso-inflata. 



B. Segmenta frondis peculiaria in receptacula transformata haud praesentia. 

 t Scaphidia in ramis brevibus (in vesiculas haud transformatis) cvoluta. 

 * Rami breves (seu folia scaphidiifera) scutiforraes breve pedicellati. 

 Scaheria Grev. — Folia scaphidiifera extus spinuloso-verrucosn, spiralitcr di- 

 sposita; folia genuina flliformia, comosa. 

 ** Rami breves formam deplanatam (foliaceam) sumentes. 

 Phyllospora Ag. — Vesicuhe praesentes (caulinffi). Folia marginalia disticha. 

 Cay^poglossum Kuetz. — Vesiculae genuinre nullae, rarius in pinnis subsingulse. 



tt Scaphidia ad vesicularum parietes evoluta. 

 CoccopJiora Grev. — Vesiculae in ramorum apice racemose congestse. 



SARGASSUM Ag. [1821] Sp. I p. 1, (Etym. Sargazo Hispanorum) Kiietz. 

 Phyc. gener. p. 360, Sp. p. 606, J. Ag. Sp. I, p. 268 et seq., Sp. 

 Sarg. Austral. (1889) [opus eximium tabulisque numerosis prajdi- 

 tum], Kjellm. in Engl. & Prantl. Natiirl. Pflanzenfam. 97, p. 287, 

 De Toni Syst. Uebers. Fucoid. 1891, p. 75, Halochloa Kuetz. [1843] 

 Phyc. gener. p. 366, Sp. (1849), p. 632, Pterocaulon Kuetz. [1843] 

 Phyc. gener. p. 360, Sp. (1849), p. 606, Carpacanthus Kuetz. 

 [1843] Phyc. gener. p. 368, Sp. (1849), p. 621, Stichophora Kuetz. 

 [1843] Phyc. gener. p. 282, Sp. [1849], p. 627, Phyllotricha Aresch. 

 [1855] Phyc. extraeurop. pag. 331 (3), Fnci, Cystoseira% Cysto- 

 phonv sp. auct. — Frons, evolutione axillari, ramosa, caulem l)re- 

 vem, folia, vesiculas et receptacuhi ut organa discreta gerens. Folia 

 lamina horizontali (rarissime verticali), s?epius costata, plana aut 

 teretiuscula constantia. Vesiculoe a folio transformato singulie ortie, 

 apice folii coronatcC aut apiculatte aut muticae. Receptacula meta- 

 morphosi folii singuli aut rami foliigeri formata, organa in axilla 

 folii fulcrantis aut simplicia aut ramosa (ssepe denique terminalia) 

 constituentia. Scaphidia infra superficiem excavata, sphierica aut 

 sajpius longitudinaliter extensa, cum ostiolo superficiali, per cana- 

 lem communicantia, hcrmaphroditica aut rarius unisexualia. Oogo- 

 nia nioiiospora. Antheridia rotundata racemosa. Paraphyses sim- 

 plices aut furcatic, oogonia stipantes, paucii'. 



