Coefficient of Conservatism:
Coefficient of Wetness:
Rock crevices on Passage Island, Isle Royale.
Freudenstein & Marr (1986) note the discovery of this species and provide notes on other Draba from Isle Royale. In addition to the features in the key, D. glabella may be distinguished by the fact that the basal leaves have the stellate trichomes on the undersurface stalked, while in D. arabisans, they are essentially sessile. The Michigan collection of D. glabella is also less pubescent than any of our D. arabisans. Rare forms with the fruits twisted apparently can occur.
Only on Isle Royale
MICHIGAN FLORA ONLINE. A. A. Reznicek, E. G. Voss, & B. S. Walters. February 2011. University of Michigan. Web. November 21, 2019. https://michiganflora.net/species.aspx?id=643.