- Rumex crispus is a perennial herb with erect flowering stems 11.8-63 in. (30-160 cm) in length.
- Basal leaves up to 15.7 in. (40 cm) x 4.3 in. (11 cm), lanceolate or oblong-lanceolate in shape. Upper Cauline leaves are less crisped than basal leaves, with petioles up to 2.4 in. (6 cm) in length. Leaf margins of cauline leaves vary from nearly flat to strongly crisped.
- Flowers are crowded in whorls which are usually distinct except towards the ends of branches. Perianth segments are orbicular-deltoid in shape are green colored at flowering but become brown.
- The fruit is 0.14-0.24 in. (3.5-6 mm) x 0.12-0.24 in. (3-6 mm) and is enclosed within inner perianth segments. Margin of fruit is entire or minutely denticulate.
- Ecological Threat
- Rumex crispus is found in grasslands, pastures and arable land. It is native to Africa, temperate and tropical Asia and Europe.
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EDDMapS Distribution - This map is incomplete and is based only on current site and county level reports made by experts, herbaria, and literature. For more information, visit www.eddmaps.org
State Invasive List - This map identifies those states that list this species on their invasive species list. For more information, visit Invasive.org
Most Troublesome / Most Common Agricultural Weed List
This map identifies those states that consider this species either most troublesome or most common in at least one commodity. For more information, visit the MTMC project page.
|No Data for this state|
|Troublesome or Common weed in one or more crops|
Invasive Listing Sources
- California Invasive Plant Council
- City of Ann Arbor Michigan Parks and Recreation
- Connecticut Department of Environmental Protection
- Faith Campbell, 1998
- Hoffman, R. & K. Kearns, Eds. 1997. Wisconsin manual of control recommendations for ecologically invasive plants. Wisconsin Dept. Natural Resources, Bureau of Endangered Resources. Madison, Wisconsin. 102pp.
- Iowa Noxious Weeds
- Jil M. Swearingen, Survey of invasive plants occurring on National Park Service lands, 2000-2007
- John Randall, The Nature Conservancy, Survey of TNC Preserves, 1995.
- Michigan Noxious Weeds
- Native Plant Society of Oregon, 2008
- New Jersey Department of Agriculture, Division of Plant Industry, 2004
- Nonnative Invasive Species in Southern Forest and Grassland Ecosystems
- Pacific Northwest Exotic Pest Plant Council, 1998
- WeedUS - Database of Plants Invading Natural Areas in the United States
Other System LinksPlants: RUCR
NPDN Pest: PEAAHBE
NPDN Host: 28095
|Common Name Reference:|| USDA, NRCS. 2010. The PLANTS Database. National Plant Data Center, Baton Rouge, LA, USA.|
|Scientific Name Reference:||USDA, NRCS. 2010. The PLANTS Database. National Plant Data Center, Baton Rouge, LA, USA.|