tall buttercup USDA PLANTS Symbol: RAAC3
U.S. Nativity: Exotic
Habit: Forbs/Herbs
Ranunculus acris L.

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Taxonomic Rank: Magnoliopsida: Ranunculales: Ranunculaceae
Synonym(s): meadow buttercup
Native Range: temp. Asia, Europe, Greenland, U.S.-Alaska (GRIN)

Appearance
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
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.
Flowers
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.
Fruit
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.

Selected Images from Invasive.orgView All Images at Invasive.org


Plant(s);
Montana Statewide Noxious Weed Awareness and Education Program , Montana State University, Bugwood.org
Additional Resolutions & Image Usage

Foliage;
John Cardina, The Ohio State University, Bugwood.org
Additional Resolutions & Image Usage

Flower(s);
John Cardina, The Ohio State University, Bugwood.org
Additional Resolutions & Image Usage

Fruit(s);
John Cardina, The Ohio State University, Bugwood.org
Additional Resolutions & Image Usage

Flower(s);
John Cardina, The Ohio State University, Bugwood.org
Additional Resolutions & Image Usage

Plant(s); in flower
John Cardina, The Ohio State University, Bugwood.org
Additional Resolutions & Image Usage

Foliage;
John Cardina, The Ohio State University, Bugwood.org
Additional Resolutions & Image Usage

Plant(s);
Montana Statewide Noxious Weed Awareness and Education Program , Montana State University, Bugwood.org
Additional Resolutions & Image Usage

Plant(s);
Montana Statewide Noxious Weed Awareness and Education Program , Montana State University, Bugwood.org
Additional Resolutions & Image Usage

Plant(s);
Montana Statewide Noxious Weed Awareness and Education Program , Montana State University, Bugwood.org
Additional Resolutions & Image Usage

Plant(s); In winter
Montana Statewide Noxious Weed Awareness and Education Program , Montana State University, Bugwood.org
Additional Resolutions & Image Usage

Flower(s);
Montana Statewide Noxious Weed Awareness and Education Program , Montana State University, Bugwood.org
Additional Resolutions & Image Usage

EDDMapS Distribution:
This map is incomplete and is based only on current site and county level reports made by experts and records obtained from USDA Plants Database. For more information, visit www.eddmaps.org
 


State(s) Where Reported invasive.
Based on state level agency and organization lists of invasive plants from WeedUS database.

U.S. National Parks where reported invasive:
Antietam National Battlefield (Maryland)
Monocacy National Battlefield Park (Maryland)
Yellowstone National Park (Wyoming)



Invasive Listing Sources:
City of Ann Arbor Michigan Parks and Recreation
Jil M. Swearingen, Survey of invasive plants occurring on National Park Service lands, 2000-2007
Mid-Atlantic Exotic Pest Plant Council, 2005