l'ol.or |ii AlgMgattuug Whisuc/oiiium. 



Conftrca unqulnta 1 limk. Iii. »•! Man. in Loiul. JottTll, of Hol , |S|:>, p.296; Flofl 



Antaret, p 194, Tal». 191, Fig. Ii (malt), 



CclluUs 17— 25 (A Uitis, 9 4 Splo longioribu*, cytiodermatc tcnui rtl 

 usque 5u incrassato, (interdum incnistuto). l'ilnmnttis angulit obtusn, ncto tri 

 acuta curratis, c.v mrrahmtc trrtitc pkr%m*que nnintlmn MfNfMf OOtUmttum, 

 sacpe sat longum, cmittcn'ibus. 1 ) 



Kerguelcnsland, Amer. nicritl. 



5. ßhizocloniun pachydermuH] Kjellmann. 



7»//. pachydermwn Kjellm., Algenveg. Murm. Meer., p. 55, Fig. 2«— 28; Alg. of 

 the Arct. Sea, p. 810. 



„Thallo ramoso, axi principali mox eranido, S~)—100 u crasso, ramis his 

 rhi:oideis C.,Rhi:oiden:nrig t \) brcribus, vulgo ex 3-pluribus <rllulis, diamttru 

 plurics longiorihus. membrana (and. cnthichronintc parro instructis, in thoUi 

 parte inferiore crebris, in super iore parcis; Ulis cauloideis, 5ü—74ju latis, cel- 

 lulis cylhidricis, diametro aequalibiis rel duplo longioribus, cytiodermatc 10 ad 

 15 fx et ultra crasso, strata disfincta praebente, cndochromate largiorc". — Ad 

 Cladophoram genus teste auctorr transiens. 



In mari Murmanico. 



b) (Rh.) norvegicum Foslie, Nye Halftalger, p. 175. 



„Ramis cauloidcis numerosis; articulisl8—30u crassis, diametro aequdUr 

 bus ad duplo longioribus, rhiioideis paucis. — Liter Rh. paehydermum et R/t. 

 ripavium forma media". 



Ad oras Norvegiae. 



Species dubiae et mihi ignotae. 



Rh. setaceum Kütz., Diagn. u. Bemerk, in Bot. Zeitg., 1847, p. 166; Spec. Alg.. 

 p. 383, incl. var. incrustata; Tab. phyc., Tab. 67, Fig. L — De Toni, 

 Svll, p. 286. 



Bh. bolbogenum Mont. in Ann. Sc. nat., Ser. III, 14, 1850, p. 305. — De Toni, 



Syll., p. 281 ; fortasse Chaetomorphae sp. 

 Rh. thermale Mont. in Ann. Sc, nat.. Ser. IV, 12, 1860, p. 174. — De Toni. Syll., 



p. 283. 



Rh. Elisabethiae Mont. in Ann. Sc. nat., Ser. IV, 8, 1857, p. 289. — De Toni. 

 Syll., p. 284. 



Rh. spongiosum Dickie, On Alg. fr. the Amazons and its Tribut, in Journ. Linn. 

 Soc. Bot., 1880, p. 124. — De Toni. Syll., p. 285. 



Rh. arboreum Zeller in Hedwigia, 1873, p. 175. — De Toni, Syll., p. 285. 



Rh. Zelleri De Toni. Syll., p. 286 (= Cladophora minutissima Zeller in Hed- 

 wigia, 1873, p. 175). 



Rh. subramosum Crouan. in Maze et Schramm, Algues de la Guadeloupe, 

 ed. II, p. 53. — De Toni, Syll., p. 286. 



l ) Magna qnaedam similitudo patet inter hanc algam, cuius speeimina originalia ab cl. 

 Hooker collecta vidi, et Zyrjorjonium decussatum ab Kuetzingio in Tab. phyc, V, Tab. II, Fig. IV, 

 delineatum quoad cellulae dimensiones et curvatoram. Nonnullae aliae Zygogonü „Species" a 

 Knetzingio, 1. c, in tabulis 10—13 delineatae forte ad Rhizoclonium genus pertinent. 



