1. Leaves cordate at the base; pistillate flowers in terminal spikes.
1. Leaves tapering to the base; flowers all in short axillary inflorescences.
2. Petioles of larger main stem leaves 2–6 (–10) mm long, usually shorter than the pistillate bracts; widest leaves 6–11 (–15) mm wide, mostly widest near the middle.
2. Petioles of larger main stem leaves 10–60 (–80) mm long, usually clearly longer than the pistillate bracts; widest leaves 12–42 mm wide, mostly widest below the middle.
3. Bracts beneath pistillate flowers mostly with 7–9 lanceolate to ovate lobes, glabrate or with a few gland-tipped hairs; blades of well-developed leaves usually less than twice as long as their petioles.
3. Bracts beneath pistillate flowers mostly with at least 10 narrowly lanceolate lobes, bearing long straight hairs (and sometimes a few shorter gland-tipped ones); blades of well-developed leaves at least twice as long as their petioles.
All species found in Acalypha
MICHIGAN FLORA ONLINE. A. A. Reznicek, E. G. Voss, & B. S. Walters. February 2011. University of Michigan. Web. May 25, 2019. https://www.michiganflora.net/genus.aspx?id=Acalypha.