1. Styles shorter than the calyx of bisexual flowers, scarcely visible; staminate flowers only 2–5, in the same umbels as bisexual flowers.
2. Calyx lobes of bisexual flowers inconspicuous, shorter than the bristles; pedicels of staminate flowers twice as long as their sepals, or shorter.
2. Calyx lobes of bisexual flowers conspicuous, equaling or exceeding the bristles; pedicels of staminate flowers ca. 2–4 times as long as their sepals.
1. Styles elongate (several times as long as calyx), arching conspicuously over (or among) the bristles; staminate flowers more numerous per umbel and often in separate umbels as well as in the same ones as bisexual flowers.
3. Calyx lobes of staminate flowers soft, less than 1 mm long (usually ca. 0.5 mm) and less than twice as long as broad; mature fruit (including bristles) ca. 3–4 mm long (not including the short stalk).
3. Calyx lobes of staminate flowers rigid (even subulate-tipped), 1–1.6 mm long and 2–3 times as long as broad; mature fruit (including bristles) ca. 4.5–6.5 mm long.
All species found in Sanicula
MICHIGAN FLORA ONLINE. A. A. Reznicek, E. G. Voss, & B. S. Walters. February 2011. University of Michigan. Web. March 18, 2019. https://www.michiganflora.net/genus.aspx?id=Sanicula.