Coefficient of Conservatism:
Coefficient of Wetness:
Fields and savannas in moist to dry sandy, acid soils, often with bracken and Danthonia spicata. More northern than S. ochroleuca, and blooming earlier, from early August to early September.
Named for Frederick W. Case, Jr. (1927-2011), student of Great Lakes Orchidaceae, Trilliums, and well known gardener.
The Spiranthes cernua complex (S. casei, S. cernua, S. magnicamporum, and S. ochroleuca) has been greatly clarified since the publication of Michigan Flora, though recognition of four species makes identification difficult. Fortunately, these species are somewhat separated both ecologically and geographically, and determination of plants is easier in the field than in the herbarium. For more information, see Case & Catling (1983) and Case (1987). This species was called S. vernalis in Michigan Flora, a more southern species not yet confirmed for Michigan.