Common Name: FALL CORAL-ROOT
Coefficient of Conservatism: 8
Coefficient of Wetness: 5
Wetness Index: UPL
Physiognomy: Nt P-Forb
Dry open oak forests; pine plantations; much less often in beech-maple forests or under tamarack.
The stem is ± bulbous or enlarged at the base in this species, unlike our other species. This occurs in two varieties, the commonest in Michigan is var. odontorhiza, with a closed perianth; var. pringlei (Greenm.) Freudenst. with an open perianth is scattered and uncommon. This is the latest species of Corallorhiza to bloom in Michigan. Flowering collections have been made from mid-August through September, with fruiting occurring through October.
Corallorhiza odontorhiza clearly is increasing in Michigan as well as spreading northward. However, a Montmorency County record from 1947 is not mapped because it was purported to have been collected in June in a Sphagnum bog; presumably there was a label mix-up. Otherwise, records from north of the middle of the Lower Peninsula did not begin to appear until the late 1960's.
A. Menk
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Alger |
Allegan |
Antrim |
Barry |
Benzie |
Berrien |
Calhoun |
Cass |
Charlevoix |
Clare |
Crawford |
Grand Traverse |
Huron |
Kalamazoo |
Kalkaska |
Lake |
Lapeer |
Leelanau |
Lenawee |
Manistee |
Mason |
Midland |
Montmorency |
Newaygo |
Oakland |
Oscoda |
Ottawa |
Saginaw |
St. Clair |
St. Joseph |
Tuscola |
Van Buren |
Washtenaw |
Wayne |
Wexford |
Citation:
MICHIGAN FLORA ONLINE. A. A. Reznicek, E. G. Voss, & B. S. Walters. February 2011. University of Michigan. Web. March, 17, 2025
https://lsa-miflora-p.lsait.lsa.umich.edu/#/record/1800