I'li;L'0/.n()siioriii:i\ DiclyoMiiilioiiaci',-!', Dictyosiiilioii. 451 



iMsccns. 11(1 onis ;itljintic;is Scaiulin;ivi;n ct iireticas Jsliuiili;i', Nov;n 

 /(■iiiliii": ,id insukin ir(Mjj;ol;xniliiun ct ox oris Galliic et Americie 

 iioreidis usqiio ;ul littoni Angli;c; in miu-i Baltico oricntiUi, sinu Co- 

 (i;ino (Reinke, .1. Agardh); in mari Ocliotensi ct Jieringiano; in oceano 

 r;icifico scptciitriouiili. — t^rondes 30 cm. ad I Metr. longir, oli- 

 viicoo (liivcsccntos, c;cspitoso-lntricat;e, ramosissimai, ramis remo- 

 tiusculis, v;i{,ns, uunc o])positis. — Var. flaccidus (Aresch.), Dictyosi- 

 phon flaccidus Arcsch. Oliscrv. pliycol. JII, p. 3J, in Bot;xniskii No- 

 tiscr 1873, p. J37. Jvjollin. H;uidhok I p. .50: froude niinori, ex oli- 

 vaceo-virescente flaviduiii, tuhuloso-innatti, in ultiinis tautum r;i- 

 mulis solidix, nuuosissima, ramis alternis aut nonnumquam o])posi- 

 tis fliiccidis ropctite ramulosis. Cum specie hinc inde. 



5. Dictyosiphon Macounii J<'iirl. On some new or imperfectly kuowii ■?i'0 

 AI-;o of tho Unitcd States I in Bull. Torr. Bot. Cluh 1889, n. 1, 



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

 viso, cylindrixceo-siiccato, hasi attcnuato, dense (luoquovcrsum ra- 

 niis suha'qualihus, cavis, fusiforinihus vel clavatis ohsito instructis, 

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

 goniis; sporangis unilocularihus sphiericis, 38-42 y. diain., per 

 totain frondis substantiam irregulariter sparsis, non papillatis. 



Hub. ad «Grande Vallee River, Gaspe, Quehec» (J. Macoun). 

 — Fronde 5-15 cm. altaj, 6-12 mm. crassie, rami 12-25 mm. longi, 

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

 Chordariam ahietinum Rupr.; specimina juvenilia a 5^c//^os7p/iOHe 

 caute dignoscenda. 



II.Sub,,'en. Coilonema Aresch.: Species iniiiores; rami primai-ii et sccundarii 

 clongato-subsimplices, tubuloso-inflati, utrinque, prsBsertim ad basin, attenuati ; 

 celliihB stcati corticalis majorcs, rotunclat-i\ S|)orangia unilocularia iii strato 

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



6. Dictyosiplion Chordaria Arcsch. Phyc. scand. p. 372, t. 8, f. D, ta 

 Ohserv. Phyc. JJJ. p. 32 (excl. var. b simpliciuscula), Reinke AI- 

 genfl. p. G3, f. 2, lijellm. Handbok I, p. 52, Hauck. & Riclit. Phyc. 

 Univ. n. 1G7 (forma tenuior) et 168 (f. gelatinosa Stronif.), Coi- 

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

 clijosiphon (Coilonema) finmarchicum Foslie Om nogle nye arcti- 

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

 Fronde axi primario distincto instructa, per longitudineiu ramis 

 elongatis suhsiniplicibus obsessa, flaccida. 



Hab. ad ligna, lapides etc, algas majores ad oras Sciindi- 



