102 < OLLIN8 wi> ill K\ El . 



collections thai cannot be placed under any of them, ;m<l to which 

 we do not venture to give names. Kjellman, 1900, u r i\ ♦•- full descrip- 

 tions of many species founded by him <>n material in Scandinavian 

 herbaria, bu1 without descriptions of older species, and with little 



indication of the distinguishing characteristics between the latter and 



his new Bpecies. Howe, 1917, shows that in one case what Kjellmao 

 considers as two sections of the genus are really sexual and asexual 

 forms of the same species. Beside the fixe species listed below, we 



can only say that we have also form- resembling G. fasciculate Kjellm., 

 G, ramulosa Kjellm., and G. fruHculosa Kjellm. Moseley reports 

 G. rugosa and G. lapidescens, from both of which species, a- formerly 

 understood, Kjellman segregated new species. Rein report- G. fa*- 

 tigiata, hut we have not been able to see a specimen. 



G. klaoki.ufokmis Kjellman, 1900, p. 47. PI. III. figs. -Ml: PI. 

 XX. fig. 16; Borgesen, 1916, p. 93, figs. 99 KM. Castle Island, Teh.. 

 Hervey. 



G. SQUAUDA Kjellman, 1900, p. 55, PI. VT, figs. 1-12; PI. XX. fig 

 Borgesen, 1916, p. 102, figs. L08-111; P. B.-A., No. 1882. Harris 

 Bay and other points on the South Shore, at all seasons. In pools 

 from half tide to low water, in dense tufts or often a much branched 

 individual plant, about 10 cm. high, varying much in smoothness, 

 firmness, and in density of branching; a favorite host for many species 

 of -mall al{ 



(i. (vi.im)hi(a (Ell. & Sol.) Lamouroux, 1821, p. 22. PI. XXII, 

 fig. 4; Kjellman, 1900, p. 64, PI. VIII, figs. 34 12: PI. XX, fig. 53; 

 Borgesen, 1916, p. inc.; Corallina cylindrica Ellis & Solander, 1786, 

 j). 1 1 1. PI. XXII, fig. 4. Mi-- Wilkinson, a single specimen, without 

 exact locality. 



G. mai;«,i\ vi \ (Ell. »\- Sol.- Lamouroux, 1816, p. 264; Kjellman, 

 1900, p. 77, PI. XX, fig. 14; Borgesen, 1916, p. 106, figs. 115-117; 

 Corallina marginaia Ellis & Solander. 1786, p. 11"). PI. XX. fL 

 Brachycladia marginaia P. B.-A., No. 1930. Xear low water mark, 

 Gravelly Pay, Jan., Hervey; at and below low water mark, Cooper's 

 Island, Aug., ( lollins. 



G. OBTUSATA (Ell. & Sol.) Lamouroux, 1816, p. 262; Kjellman. 

 1900, i). 88; P. P. -A., Xo. 1881; Corallina obtusata Ellis & Solander, 

 1876, p. 113, PI. XXII. fig. 2. Faxon; Tucker"- Town, I'd.., Pec.; 

 Walsingham, April, Hervey. Varies much in amount of calcification, 

 which sometimes is entirely lacking. Usually there is not a gradual 

 diminution of the amount of calcification, often the lower pari i 

 frond i- thickly calcified, this part sharply marked oil' from the upper 

 part, (piite uncalcified. 



