F. Børgesen: Rhodophyceæ of the Danish W. Indies. 



203 



I 



This species easily 

 known by its characteristic 

 antheridial stands has been 

 found in great quantities 

 in the sea around Buck 

 Island north of St. Croix, 

 and in the sound between 

 St, Thomas and St. Jan. In 

 the North Atlantic it is 

 known from the shores of 

 Massachusetts down to New 

 Jersey. Here it is a sum- 

 mer plant, while in the West 

 Indies it was found by me 

 in February — March. 



It is almost certain that 

 it has not been found pre- 

 viously in the West Indies. 



To be sure M""^ Vickers 

 records it in her list ^) of 

 algæ from Barbadoes, but, 

 as pointed out by Lewis ^'), 

 Professor Farlow does not 

 believe the specimens of 

 M^® Vickers to be identical 

 with Gr. Bornetiana. More- 

 over Prof. Farlow himself, 

 most kindly, has informed 

 me by letter that he had 

 written to Dr. Bornet on 

 the subject and, that the 

 latter after having seen the 

 above-mentioned specimens 

 found by M"^ Vickers did 

 not think her warranted in 

 naming them Gr. glob if era. 



In the above quoted 

 paper of Lewis, edited only 



Fig. 191. Griffithsia globifera (Harv.) J. 

 Ag. a, basal part of a plant and upper 

 end of a branch, b, part of a female 

 plant with cystocarps surrounded by pro- 

 tecting cells, verticillate ramified hairs 

 and dwarf shoots, 

 (a, about 6:1; b, about 18:1). 



^) Vickers, A., Liste des algues marines de la Barbade. (Ann. Sc. Nat. 

 9e serie, Bot. t. I, 1905). 



2) Lewis, L F., The life history of Griffithsia Bornetiana (Annals of Bo- 

 tany, voh XXIII, nr. XCII, Oct. 1909). 



