Please try our next iteration of the Michigan Flora Online here. Beginning on February 1, 2023, michiganflora.net will point to this new site.
The new site offers several benefits over the existing website, including real coordinate mapping, giving a clearer view of the density of documentation as well as more precision about plant distributions and their link to landforms. We will also have the ability to update species pages more regularly, both in terms of new collections and as more existing Michigan specimens are georeferenced. In addition, we have a better photo display, and offer indented keys.
1. Leaves all or mostly 12–30 cm long; plant ca. 25–50 (or more) cm tall; flowers ca. 2–3 cm long, including stamens in a cone-like assemblage and reflexed corolla lobes.
1. Leaves (or blades if a petiole is present) less than 10 cm long; plants often shorter; flowers less than 1 (–2.5) cm long, with corolla lobes spreading but not reflexed.
2. Scape and leaves glabrous or farinose; flowers less than 1 cm long, the corolla pale to deep magenta with yellow “eye;” leaves tapered at base but without distinct petiole; style ca. 1–3.5 mm long; plant native in calcareous habitats.
2. Scapes and leaves (especially beneath) pubescent; flowers ca. 1.5–2.5 cm long, the corolla yellow or purplish; leaves mostly contracted to a distinct winged petiole; style much exceeding 3.5 mm (ca. 5–10 mm); plant rarely escaped from cultivation.
All species found in Primula
MICHIGAN FLORA ONLINE. A. A. Reznicek, E. G. Voss, & B. S. Walters. February 2011. University of Michigan. Web. January 29, 2023. https://michiganflora.net/genus.aspx?id=Primula.