NOTES ON SOME MARINE ALGAE FROM THE 

 VICINITY OF BEAUFORT, NORTH CAROLINA^ 



Marshall Avery Howe and William Dana Hoyt 



The New York Botanical Garden Washington and Lee University 



(with plates 11-15) 



Most of the algae with which the present paper is concerned 

 were obtained by Mr. Lewis Radcliffe of the U. S. Bureau of 

 Fisheries through dredging operations on August 11, 1914, in 

 "133^ to 14 fathoms" of water on a reef about 23 miles off shore 

 from Beaufort, North Carolina. Previous dredgings here under 

 the direction of the Bureau of Fisheries had shown this submerged 

 reef to be the northern limit, so far as known, of certain tropical 

 and subtropical algae, such as Udotea cyathiformis. The present col- 

 lection, though small, is of special interest inasmuch as it contains 

 two species that had previously been known from Europe only and 

 seven species that appear to us to be new. Some fragments of Dic- 

 tyota dichotoma that were brought up by the dredge were particularly 

 remarkable for the number of small epiphytes and endophytes that 

 they bore. 



Type specimens of the species described as new will be de- 

 posited in the U. S. National Herbarium; cotypes are in the 

 herbaria of The New York Botanical Garden and of W. D. Hoyt. 

 Other species of algae from the submerged reef and from the 

 Beaufort region in general will be described or enumerated in a 

 more extended paper soon to be published by the junior author. 



Microchaete nana sp. nov. 



Stratum inconspicuous, submicroscopic; filaments loosely gre- 

 garious, mostly 100-200 fx long, 5.5-9.0 ix in diameter, curved near 

 base or near middle, often arcuate-flexuous, mostly decumbent 

 or ascending, occasionally prostrate or suberect, very slightly 

 attenuate towards apex; vagina very thin, delicate, hyaline, 

 scarcely visible; trichomata light olivaceous (.?), 5.0-8.3 )u in 



^This paper is published with the permission of the U. S. Commissioner of Fish and 

 Fisheries. 



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