- Ranunculus acris is a short lived perennial herbaceous plant. The plant is erect, hairy, grows from 10-40 in. (25.4-101.6 cm) tall and has fibrous roots. R. acris is native to temperate Asia and Europe.
- Foliage is divided and pilose with long petioles. Basal leaf blades of R. acris have 3-5 deep lobes that are also divided. The overall shape is pentagonal about 0.7-2.0 by 1.0-3.9 in. (1.8-5.2 by 2.7-9.8 cm). It has toothed margins.
- R. acris flowers have shiny yellow petals up to 1.25 in. (3.2 cm) wide. Flowers have sepals about half the size of the petals. Flowers bloom from May-Oct.
- R. acris reproduces by seeds. Fruits are globose achenes 2-4 in. (5-10 cm) wide.
- Ecological Threat
- R. acris can be found invading wet lowlands, rich woodlands, pastures, meadows, and along roadsides and other disturbed sites. It prefers heavy, moist soils but can grow in sandy or gravelly soil where there is sufficient moisture.
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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
Invasive Listing Sources
- City of Ann Arbor Michigan Parks and Recreation
- Great Lakes Early Detection Network
- Jil M. Swearingen, Survey of invasive plants occurring on National Park Service lands, 2000-2007
- Mid-Atlantic Exotic Pest Plant Council, 2005
- Montana Noxious Weeds
- WeedUS - Database of Plants Invading Natural Areas in the United States
|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.|