Cyclospoi'inae, Fucacea), Ascopliyllum. 211 



;il),nipt;i', ni;ir;4ines ricatriribus (lonticiiLitos iuonstrant. Vesiouhe 

 m;i{>nitudine nucis iivell:ui;i% subelliptiete, in ironde latiore ni;i,r<^fina- 

 ta3, in angustiore extus levissiniie,. stirpein nodosani reddentes. 

 Receptacula iipiec pinnul;iruin intl;ita obovoideo-spluerica, 0,5-1 

 ein. longa. — forni;! scorpioides (Hornem.) Roinlce Algenll. p. 33!, 

 Ivjellm. Handbok 1, p;ig. 4, Fucodium nodosHm y. scorpioides 

 J. Ag. Sp. 1, {). 207, Fiicus scorpioides Horiiem. i^'l. Dan. tab. 

 1470, Chordaria scorpioides Lyngb. Hydrophyt. Dan. p. 50. t. 13, 

 Fucns nodosus var. (Icnudatus Ag. Sp. p. 86, Halicoccus nodosus 

 {'j furcatus Aresch. Pliyc. scand. p. 254. t. 1, Alg. Scand. exsicc. 

 n. 52, Ozothallia nodosa ,6 de7%udata Kuetz. Sp. p. 502, Cfr. etiain 

 Tab. Phyc. X, t. 20 : fronde subcylindracea, pininita, pinnis elon- 

 gatis, filiformibus, vesiculis receptaculisque nullis. In sinu ('odano 

 profundiori et ad oras Bahusia^ sterilis, perennis, haud adfixa, non- 

 iiniii(i[uam (locis qiLT currentibus continuo agit;intur) foriiiam sic di- 

 ctam Ae(/((gropilam sumens. 



. Ascophyllum Mackaii (Turn.) Holin. et Batt. Revis. List of Brit. 332 

 Mar. Alg. p. 85, OzothaUia Mackaii Kuetz. Sp. p. 592, Fucus Ma- 

 ckaii Turn. Hist. Fuc. tab. 52, Engl. Bot. tab. 1927, Stackh. Ner. 

 t. 18, Harv. Phyc. Brit. tab. 52, Johnst. & Croall Brit. Sea Weeds 

 111, p. 25, f,-l-4, Physocaulon Mackaii Kuetz. Phyc. gener. p. 352, 

 Fucus nodosus y Mackaii Ag. Syst. p. 275, Fucodium nodosum 

 [■j Mackaii J. Ag. Sp. I, p. 20G. — Fronde cylindracea vel sub- 

 compressa, gracili, ramosissima, fastigiata, ramis dichotomis diva- 

 ricatis hinc inde inflatis, receptaculis (ramulis scaphidiiferis) in 

 ramis inferioribus lateraliter insertis, longe peduncuhxtis, elliptico- 

 lancoideis, interdum bifurcatis, pendulis. 



Hah. in oceano Atlantico ad oras Angliie (Hooker, Moore, 

 Shuttleworth, Harvey &c.); in mari Baltico inventjini lianc speciem 

 fuisse a cl. Kuetzing memoratur. — Frondes in caespites orbiculares 

 magnitudine capitis humani collectse, absque radice supra limum 

 extensae, e tereti conipressa3, decomposito-dichotomce et subfasti- 

 giatfe ramulisque lateralibus numerosis ssepe instructoe. Vesicul;e 

 plerumque rara», infra axillas sa^pius inflatae. Receptacula juxta 

 basin ramornm in ramulo graciliori pendula. Substantia subcoriacea, 

 fragilis, C(flor plant;e oIiv;iceo-flavescens. Fortasse, ut uonnulli phy- 

 cologi a3stumant, meram sistit formam (propter nuijus contentum 

 salinuin aquae) Ascopht/lli nodosi (L.) Le Jol. — f. Robeiisonil 

 Batt. Alg. Clyde Sea Area (1892), p. 5: a typo diflert frondibus 

 vesiculis destitutis, complanatis irregul;iriter(j^ue divisis, recepta- 



