Phaoozoosporinre, Dicf,yosiplionace?o, Dlctyosiplion. 451 



nascens, ad oras atlanticas Scandinavipe et arcticas Islandiae, Nov;e 

 Zeniliie; ad insulam Helj^olandiam et ex oris Gallia3 et AmericLB 

 borealis usque ad littora Angliae; in mari Baltico orientali, sinu Co- 

 dano (Reinke, J. Agardh); in mari Ochotensi et Beringiano; in oceano 

 Pacifico septentrionali. — Frondes 30 cm. ad 1 Metr. longa', oli- 

 vaceo flavescentes, caespitoso-intricatoe, ramosissima3, ramis remo- 

 tiusculis, vagis, nunc oppositis. — Var. flaccidus (Aresch.), Dictyosi- 

 phon flaccidus Aresch. Observ. phycol. III, p. 31, in Botaniska No- 

 tiser 1878, p. 137. Kjellm, Handbok I p. 50: fronde minori, ex oli- 

 vaceo-virescente flavidula, tubuloso-inflata, in ultimis tantum ra- 

 nnilis solida, ramosissima, ramis alternis aut nonnumquam opposi- 

 tis flaccidis repetite ramulosis. Cum specie hinc inde. 



5. Dictyoslphon Macounii Farl. On some new or imperfectly known ■7'>o 

 Alga3 of the United States I in Bull. Torr. Bot. Club 1889, n. 1, 



p. 11, t. 87, f. 1, Notarisia 1889, p. 735. — Frondibus axi indi- 

 viso, cylindraceo-saccato, basi attenuato, dense quoquoversum ra- 

 mis subsequalibus, cavis, fusiformibus vel clavatis obsito instructis, 

 cellulis superficialibus minutis, circ. 7 y. diam,, irregulariter poly- 

 goniis ; sporangis unilocularibus sphgericis, 38-42 u. diam., per 

 totam frondis substantiam irregulariter sparsis, non papillatis. 



Hab. ad «Grande Vallee River, Gaspe, Quebec» (J. Macoun). 

 — Fronde 5-15 cm. altse, 6-13 mm. crassoe, rami 12-25 mm. longi, 

 circ. 3 mm. crassi. Specimina maxime evoluta in mentem revocant 

 Chordariam abietinam Rupr.; specimina juvenilia a Scytosiphone 

 caute dignoscenda. 



II. Sub^en, Coilonema Aresch.: Species rainores; rami primavii et secundarii 

 elongato-subsimplices, tubuloso-inflnti, utrinque, praesertim ad basin, attenuati; 

 cellulae strati corticalis mnjores, rotundatiR. Sporangia unilocularia in strato 

 corticali sita (?) in superlicie fere orbicularia et dense approximata. 



6. Dictyosiphon Chordaria Aresch. Phyc. scand. p. 372, t. 8, f. B, ta 

 Observ. Phyc. III, p. 32 (excl. var, h simpliciuscula), Reinke Al- 

 genfl. p. 63, f. 2, Kjellm, Handbok I, p. 52, Hauck. & Richt. Phyc. 

 Univ. n. 167 (forma tenuior) et 168 (f. gelatinosa Stromf.), Coi- 

 lonema Chordaria Aresch. Alg. scand, exsicc. (1872), n. 323, Bi- 

 cfyosiphon (Coilonema) flnmarchicum Foslie Om nogle nye arcti- 

 ske Havalger p. 6, t. 1, f, 5-7 fide ipso Foslie Contrib. p. 103. — 

 Fronde axi primario distincto instructa, per longitudinem ramis 

 elongatis subsimplicibus obsessa, flaccida. 



Hah. ad ligna, lapides etc, algas majores ad oras Scandi- 



