22 



FUCACEiE. 



[Thallogens. 



powerful remedy in cases of goitre. The burnt sponge formerly administered in sii 

 pn«ps. nrobahlv owed its efficacv to the Iodine it contained ; and it is also a verycu 



imilar 

 cases, probably owed its efficacy to the Iodine it contained ; ana it is aiso a very curious 

 fact, that the stems of a sea-weed are sold in the shops, and chewed by ^le mhabitants 

 m South America, wherever goitre is prevalent, for the same purpose. This remedy is 

 termed by them Palo Goto (hterally, goitre-stick), and consists ol fragments ot the bar- 

 gassum bacciferum and Laminarias above alluded to. lodme is principally obtamed m 

 Europe from the ashes of the Fuci vesiculosus, nodosus, ceranoides, and sei-ratus. 



GENERA. 



Suborder I.— Vaucherice. 

 Frond mono- or pleio- 

 siphonous, without 

 bark. The utricles fonn- 

 ing a lateral branchlet, 

 proceeding either from 

 the upper joint of the 

 branch, or occasionally 

 from the lowest. 



Tribe 1. Hydrogas- 

 tndse.—Froiid produced 

 from a single vesicle or 

 tube, rarely from several 

 that are continuous and 

 loosely interwoven. 

 Hydrogastrum, Besv. 

 - Botrydium. Wallr. 



Rhizococcum, Desmaz. 

 Vaucheria, B. C. 



Ectosperma, Vauch. 

 Bryopsis, Lamx. 

 Valonia, Ginnan. 



Physydrum, Raf. ? 

 Codiuni, Stack. 



Lamarkia, Olivi. 



Agardhia, Cabrera. 



Spongodium, Lamx. 



Tribe 2. Dasycladidae. 

 — Frond monosiphono us, 

 continuous, or jointed, 

 with verticillate branch- 

 es, which are fastigiate, 

 jointed, and have the last 

 joint transforined into a 

 vesicle. 

 Chamsedoris, Mont. 

 Dasycladus, Agh. 



Myrsidium, Raf. 

 Neomeris, Lamx. 

 Cymopolia, Lamx. 



Tribe ?,. Ectocarpidse. 

 —Threads jointed, con- 

 sisting of a single row of 

 cells, variously branched. 

 Vesicles derived from one 

 joint, either at the end of 

 the branches, or of the 

 laterals. 

 Leiblinia, Etidl. 



Besmarestella, Bory. 

 Chantransia, Fries. 



Audrienella, Bory. 



Genicularia, Rons. 

 Ectocarpus, Lyngb. 



Lyngbya, Gaillon. 



Macrocarpus,^omi&ai 



Opospermum, Raf. ? 



Calospermum, Raf. ? 



Pylaiella, Bory. 



Lyngbyella, Bory. 

 Bulbochaete, Agh. 



Tribe 4. Batrachosper- 

 midae. — Frond piolysi- 

 phonoiis, composed of a 

 primary thread sur- 

 rounded by parallel ac- 

 cessory ones. Vesicles 



terminal or lateral, clus- 

 tered. 

 Batrachospermum, Roth. 



Charospermum, Lk. 



Brapamaldia, Bory. 



Monilina, Bory. 



Thorinia, Bory. 



Lemanina, Bory. 



Gelatinaria, Roussel. 



Torularia, Bonnem. 

 Liagora, Lamx. 

 Actinotrichia, Becaism. 

 Galaxaura, Lamx. 



Blchotomaria, Lamk. 



Alysium, Agh. 



Microthoe, Dec. 

 Thorea, Bory. 



Polycoma, Palis. 

 Myriocladia, J. Agh. 



"jEgira, Fries ? 



Tribe 5. Chordaridae. — 

 Frond polysiphonous, 

 loith flocks proceeding in 

 all directions froin the 

 medullary substance , free 

 in the circumference, 



Cruoria, Fnes. 

 Myrionema, Grev. 



Elachista, Arescli. 

 Mesogloia, Agh. 

 Chordaria, Agh. 

 Leathina, Gray. 



Corynephora, Agh. 



Clavaletta, Bory. 

 Liebmannia, J. Agh. 



Suborder II. — Halyse- 

 rece. Frond polysipho- 

 nous, barked, jointed, 

 or continuous. Vesi- 

 cles scattered over the 

 surface of the frond, 

 or collected into heaps. 



Tribe 1. Sphacelaridse. 

 — Frond jointed ; vesicles 

 lateral, solitary. 



Sphacelaria, Lyngb. 



Belisella, Bory. 



Lyngbyella, Bory. 

 Myriotrichia, Harvey. 

 Cladostephus, Agh. 



Tribe 2. Dictyotidse.— 

 Frond continuous, mem- 

 branous. Vesicles sup- 

 ported by flocks, collected 

 in heaps,or scattered over 

 the upper surface of the 

 frond. 



Halyseris, Targ. 



Neurocarpon, "Web. 



Bictyopteris, Lamx. 



Polypodioidcs , Stack. 

 Dictyosiphon, Grev. 

 Dictyota, Lamx. 

 Zonaria, J. Aqh. 



Stifflia, Nardo. 



Zanardinia, Nardo. 



Numbers, Gen 



81 



Padina, Adans. 



Trattinickia, Web. 

 Padinella, Aresch. 

 Cutleria, Grev. 

 Arthrocladia, Buby. 



Elaionema, Berk. 

 Scytosiphon, Agh. 



Chorda, Stack. 



Filum, Stack. 



Chordaria, Lk. 

 Soranthera, Postels. 

 Punctaria, Grev. 

 Asperococcus, Lamx. 



Enccelium, Agh. 



Hydroclathrus, Bory. 

 Striaria, Grev. 



Carmichaelia, Grev. 

 Stilophora, J. Agh. 

 ? Hildenbrandia, Nardo. 



Ralfsia, Berk. 



Tribe 3. Laminaridae. 

 — Frond continuous, co- 

 riaceous, sometimes bear- 

 ing bladders. Vesicles 

 scattered, or collected in 

 heaps, supported by flocks, 

 growing on both sides of 

 thefrond. 

 Lessonia, Bory. 

 Macrocystis, Agh. 

 Nereocystis, Postels. 

 Ecklonia, Honwm. 

 Laminaria, Lamx. 



Gigantea, Stack. 



Saccharina, Stack. 



Muscefolia, Stack. 



Polyschidia, Stack 



Palmaria, Lk. 



Laminastrum, Duby. 



Fasciata, Gray. 

 Capea, Montagn. 

 Haligeria, Bee. 

 Alaria, Grev. 



Orgya, Stackh. 

 ThalassiophyUum, Post. 

 Agarum, Grev. 



Myriotrema, Lapyl. 

 Costaria, Grev, 



Tribe 4. Sporochnidse. 

 — Frond continuous, be- 

 tween cartilaginous and 

 membranous, flocks form- 

 ed astride a capitate re- 

 ceptacle, bearing the vesi- 

 cles. 



Sporochnus, Agh. 

 Desmarestia, Lamx. 



Besmia, Lyngb. 



Bichlora, Grev. 



Trinitaria, Bory. 



Hippurina, Stack. 



Hyalina, Stack. 



Flagellaria, Stack. 



Suborder III. — Fucece. 

 Frond polysiphonous, 

 often bladdery. Vesi- 

 cles seated in hollow 

 conceptacles formed of 



Sp. 452. (Endl.) 



a folding in of the 

 frond, pierced by a 

 pore, and surrounded 

 by flocks ; concepta- 

 cles scattered or col- 

 lected upon a recep- 

 tacle. 



Tribe 1. Lemanidffi. — 

 Frond hollow, ivholly 

 converted into a recepta- 

 cle. 



Lemanea, Bory. 

 Nodularia, Link. 

 Gongycladon, Link. 

 Trichogoma, Palis. 

 Vertebraria, Rouss. 



Tribe 2, Fucidas.— 

 Conceptacles not collected 

 upon a receptacle. 



Fucus, L, 



Cervina, Gray. 



Halidrys, Stack. 



Bifurcaria, Stack. 

 Ozothalia, Bee. and Th. 

 Pelvetia, Bee. and Th. 

 Carpodesmia, Grev. 

 MjTiodesma, Bee 

 Himanthalia, Lyngb. 



Lorea, Stack. 

 Xiphophora, Montagn. 

 Splachnidium, Grev. 

 Durvillaea, Bory. 

 Hormosira, Endl. 



Moniliformia, Lamx, 



Monilia, A. Rich. 

 Castraltia, A. Rich. 



Scaberia, Grev. 



Tribe 3. Cystoseiridae. 

 — Conceptacles or recep- 

 tacles distinct from the 

 frond. 



Coccophora, Grev. 

 Halidrys, Lyngb. 



Siliquaria, Gray. 

 Blossevillea, Bee. 



Cystophora, J. Agh, 

 Cystoseira, Agh. 



Acinaria, Targ. 



Machaia, Gray. 



Catenaria, Raf. 



Ascophylla, Stack. 



Ericaria, Stack. 



Monilifera, Stack. 

 Sargassum, Rumph, 



Baccularia, Gray. 



Halochloa, Kiitz. 



Myagropsis, Kiitz. 



Spongocarpus , Kiitz. 

 Turbinaria, Bory. 

 Carpacanthus, Kiitz. 

 Phyllospora, Agh. 

 Carpophyllum, Grev, 

 Marginalia, A. Rich. 

 Scytothalia, Grev. 



Stackhoiisia, Lamx. 

 Seirococcus, Grev. 

 Polyphacum, Agh. 



Osmundaria, Lamx. 



Position. — Confervaceee. Fucace^. — Ceraraiacepe. 



