BIOLOGICAL SURVEY OF WOODS HOLE AND VICINITY. 



509 



Chart 239. — Antithamnion cruciatum (Agardh) Nageli. 



Widely distributed in both Buzzards Bay and Vineyard Sound over stony bottoms that support 

 extensive growths of Chondrus, Phyllophora, and Polyides, upon which it is a common epiphyte. 



