Glassy Lyonsia

Gulf of St. Lawrence (unspecified region), northern Gaspe waters, Magdalen Islands (from Eastern Bradelle valley to the west, as far as Cape North, including the Cape Breton Channel); Prince Edward Island (from the northern tip of Miscou Island, N.B. to Cape Breton Island south of Cheticamp, including the Northumberland Strait and Georges Bay to the Canso Strait causeway); Nova Scotia to North Carolina

glues sand grains to itself

infralittoral and circalittoral of the Gulf and estuary