246 



whether we here have to do with a special form, having had so 

 few specimens at my disposal. 



As to the ramification, this is very irregular, the branches 

 being of very variable length, some short and some long in no 



definite order. They are very 

 flexuous and spreading to all 

 sides. 



The branches bear short- 

 er branchlets most of these 

 being very short, tubercle-like. 

 Only specimens with te- 

 trasporangia were found; the 

 tetrasporangia are formed in 

 the upper end of the tubercle- 

 like ramuli. 



This species is gathered in 

 rather open sea and in fairly 

 deep water, from 5 to 15 fa- 

 thoms. 



St. Croix: off Frederikssted, 

 White Bay and near Buck Island. 

 St. Thomas: In the sea to the 

 West of Water Island. St. Jan: 

 off Annaberg and near Thatchkey 

 Island. According to J. AGARDH, 

 1. c., the plant has already been 

 found at St. Croix (Hb. Hoffman). 

 Geogr. Distrib.: West 

 Indies. 



2. Laurencia papillosa 

 (Forsk.) Grev. 



GREVILLE, R. K., Algee Bri- 

 tannicae, 1830, p. LII. J. AGARDH, 

 Spec. Alg., vol. II, pars III, p. 756; 

 Epicrisis, p. 652. KUTZING, Spec. 

 Alg., p. 855; Tab. Phycologicae, 

 vol. XV, tab. 62. 



Fucus papillosus Forsk., Flora TEgypt.-Arab., 1775, p. 190. 



Fucus thyrsoides Turner, Fuci, tab. 19. 



Chondria papillosa Ag., Spec. Alg., p. 344; Systema, p. 203. 



For more synonyms compare DE-TONI, Sylloge Alg., vol. IV, sectio 

 III, p. 789. 



When growing in exposed localities this plant reaches only 



Fig. 234. Laurencia Poitei (Lamour.) 



Howe. Part of the thallus. 



(About 2: 1). 



