Coefficient of Conservatism:
Coefficient of Wetness:
B. S. Walters
A characteristic succulent strand plant seldom found far from sites where waves and wind have deposited fruit segments along the sandy beaches and low dunes of the Great Lakes.
Almost all of our plants are the Great Lakes endemic var. lacustris Fernald, with a lanceolate terminal segment in the fruit, only slightly broader than the basal segment. The var. edentula, with a very broad ovoid terminal segment in the fruit, is found along the Atlantic coast. This variety is very uncommon on the Great Lakes shores, where it is apparently introduced (also introduced on the Pacific coast). It is known in Michigan from Berrien, Emmet, Mackinac, and Muskegon Cos.