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. Trees or shrubs; leaves simple; fruits pediceled drupes.
Celtis
1. Herbs or herbaceous vines; larger leaves compound or lobed; fruits sessile achenes subtended by bracts.
2. Leaves palmately compound with lanceolate to oblanceolate leaflets, opposite on lower portion of the erect stem and alternate above; stems and petioles finely antrorse-hispid; achenes subtended by narrow bracts, not concealed.
Cannabis
2. Leaves at most deeply lobed, all opposite on a climbing stem (vine); stems and petioles retrorse-scabrous; achenes concealed by broad, strongly overlapping bracts.
Humulus
All species found in Cannabaceae
Citation:
MICHIGAN FLORA ONLINE. A. A. Reznicek, E. G. Voss, & B. S. Walters. February 2011. University of Michigan. Web. January 29, 2023. https://michiganflora.net/family.aspx?id=Cannabaceae.