THE ALGAE OF BERMUDA. 99 



cystocarps in April. Prof. Setchell has called our attention to Lamou- 

 roux's name which considerably antedates the Harveyan name in 

 general use. 



LiAGOHA Lamouroux. 



1. Not calcified. 4. L. peotinata. 



1. Calcified. 2. 



2. Very soft and gelatinous. 3. L. pulverulenta. 



2. Firmer. 3. 



3. Calcareous coating continuous and smooth. 1. L. vaUda. 



3. Calcareous coating loose, penetrated by assimilative filaments. 



2. L. elongata. 



1. L. VALiDA Harvey, 1853, p. 138, PI. XXXI. A; Borgesen, 

 1915, p. 70, figs. 71-75; P. B.-A., No. 1929. Rein; Kemp; St. 

 David's Island, Feb., April, Buildings Bay, April, Hervey; Cooper's 

 Island, April, Aug., CoUins. The most common of the Bermuda 

 species of Liagora, and generally easily recognized by the continuous 

 calcareous coating and firm, little gelatinous consistency. It occurs 

 in its best condition just below low water mark, but may extend up 

 nearly to high water mark. In many places it forms a continuous 

 zone between tide marks, the individual plants short and stunted, 

 mostly chalky white. When growing in more favorable conditions 

 a pinkish shade shows through the coating more or less. 



2. L. ELONGATA Zanardini, 1851, p. 35; 1858, p. 274, PL VI, fig. 1; 

 Borgesen, 1915, p. 67, figs. 67-70; P. B.-A., No. 2088; L. corymhosa 

 J. G. Agardh, 1896, p. 104. Kemp, July, unnamed specimen in herb. ; 

 Miss Wilkinson; Gates Bay, Buildings Bay, March, St. David's 

 Island, May, Hervey; Cooper's Island, Aug., Collins. Cystocarps 

 in March. Not as variable as other species of the genus, and usually 

 recognized easily by the light purple-brown color, the light and loose 

 calcification, and the long, rather distantly dichotomous fronds, of 

 nearly uniform diameter. L. corymhosa, according to J. G. Agardh, 

 1896, p. 104, " Hab. ad littora Floridae et insulas Bermudas." Speci- 

 mens agreeing fairly well with Agardh's description were collected at 

 Castle Harbor by Wadsworth, March, 1890; at Tobacco Bay, March 

 11, 1914, Hervey; but it is impossible to separate them from L. 

 elongata. As to characters derived from internal structure used by 

 Agardh in his treatment of the genus, 1. c, we have not been able to 

 apply them, as we find them inconstant. He divides Liagora into 

 two subgenera, Euliagora and Goralia, the former with an inner layer 



