Rumex altissimus Alph. Wood
Common Name: PALE DOCK
Coefficient of Conservatism: 2
Coefficient of Wetness: -3
Wetness Index: FACW
Physiognomy: Nt P-Forb

River banks and also roadsides, not common.

Sometimes there is a second poorly developed (or rarely fully developed) grain on one of the inner tepals. One collection, from Cheboygan Co. (F. C. Gates 10533, F, MO), even has grains on all 3 tepals. Such specimens and those too immature to show clearly that only one of the inner tepals is forming a well developed grain can usually be distinguished from R. triangulivalvis, which also has flat entire leaves with axillary shoots, by the more ovate-lanceolate leaf blades (ca. 4–5 times as long as wide, or broader). The mature fruiting perianth is ca. 4–5 (–6) mm long; in R. triangulivalvis it is ca. 3–3.5 (–4) mm long.

Locations

Berrien County
Cheboygan County
Delta County
Ingham County
Ionia County
Kalamazoo County
Kent County
Midland County
Monroe County
Ottawa County
St. Clair County
Van Buren County
Washtenaw County
Wayne County

Citation:

MICHIGAN FLORA ONLINE. A. A. Reznicek, E. G. Voss, & B. S. Walters. February 2011. University of Michigan. Web. December 14, 2017. http://www.michiganflora.net/species.aspx?id=2303.