1921] Lewis & Taylor,— Notes from Woods Hole— 1921 255 



eries Commission brought into the laboratory at Woods Hole, Mass- 

 achusetts, a specimen of the Loggerhead Turtle, Thalassockelys 

 caretta from Vineyard Sound. Tufts of an alga on the carapace were 

 referred to the writer for study. He is much indebted to the late 

 Mr. F. S. Collins for helpful suggestions with regard to its relation- 

 ships. 



The form was found to be closely related to Edocarpus MitcheUae 

 Harv. {E. vircscens Thuret) as indicated by its sporangial characters 

 and certain striking features of its vegetative habit. It differs mainly 

 in having the primary erect filaments sub-simple, not abundantly 

 branched, and in the smaller size of the vegetative filaments and the 

 sporangia. The fresh material showed abundant stages in the 

 development of the sporangia, the extrusion of the spores and their 

 germination and growth. The decumbent filaments produced lobed 

 haptera, and the cells of the erect filaments occasionally sent out 

 eortieating down-growths which sometimes reached to the substratum. 

 The filaments and branches have a limited apical growth soon suc- 

 ceeded by intercalary growth from near the base. In all these growth 

 characters it resembles E. virescens Thuret as described by Sauvageau 

 (Jour, de Bot. Vol. 10, 1890). The non-motile spores showed a very 

 distinct wall, and no evidence could be found that they had the power 

 of movement at any time. 



On July 19th, 1921, Dr. I. F. Lewis collected tufts of a brown alga 

 from a piece of timber washed ashore on the island of Cuttyhunk, 

 Massachusetts, which on examination proved to be the same variety 

 as that obtained two years before. This material also showed 

 abundant sporangia and sporelings and was in more luxuriant condi- 

 tion than the first lot. The fact that both collections of the alga were 

 from drifted objects makes it impossible to tell the source of the 

 material, but the unworn appearance of the timber would seem to 

 indicate that it bad not travelled very far and that this Edocarpus 

 might be expected along the eastern seaboard at no great distance 

 south of Cape Cod. — W. R. Taylor. 



Baptisia BRACTEATA (Mihl.) Ell. is listed in the floras as having 

 a western distribution, coming east only to Michigan. About the end 

 of July 1919 one of the botanical students at the Marine Biological 

 Laboratory brought in to the department a specimen which proved to 

 be this plant. Investigation showed that it had appeared along the 



