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Marcus, Joseph A.
Ranunculus macranthus Scheele
Synonym(s): Ranunculus fascicularis var. cuneiformis, Ranunculus macranthus var. typicus
USDA Symbol: rama3
USDA Native Status: L48 (N)
This is a clumped perennial with bright-yellow, fragrant, cup-shaped flowers. The long-stalked blossoms often appear semi-doubled. Large buttercup stems can be erect and 1 ft. tall or reclining and 3 ft. long. Its stem leaves are densely hairy and deeply cleft, while the basal leaves are cut into leaflets.
This is one of the largest-flowered native buttercups.
Plant CharacteristicsDuration: Perennial Habit: Herb Fruit: Size Class:
Bloom InformationBloom Color: Yellow
Bloom Time: Mar , Apr
, TX Native Distribution:
S.w. U.S. & Mex. Native Habitat:
Prairie, Plains, Meadows, Pastures, Savannahs, Woodlands edge, Opening
Growing ConditionsWater Use:
Medium Light Requirement:
Sun Soil Moisture:
Moist Soil pH:
Acidic (pH<6.8) Soil Description:
Rich, wet soils. Sandy, Sandy Loam, Medium Loam, Clay Loam, Clay Conditions Comments:
This is one of the largest flowered native
buttercups. The large butter-yellow flowers and attractive foliage of this plant immediately attract the eye. Prefers moist soil.
BenefitUse Ornamental: Pocket prairie, Wildflower meadow, Bog or pond area
Warning: POISONOUS PARTS: All parts. Low toxicity if eaten. Minor skin irritation lasting minutes if touched. Symptoms include burning of the mouth, abdominal pain, vomiting, and bloody diarrhea. Skin redness, burning sensation, and blisters following contact with cell sap. Toxic Principle: Protoanemonin, released from the glycoside ranunculin.(Poisonous Plants of N.C.)
Conspicuous Flowers: yes
Interesting Foliage: yes
Nectar Source: yes
Deer Resistant: High
PropagationDescription: Easily raised from seed.
Seed Collection: Collect seed in May or June. Falls quickly after maturing so watch closely.
Commercially Avail: yes
National Wetland Indicator Status
|Status:|| FACW || FACW |
This information is derived from the U.S. Army Corps of Engineers National Wetland Plant List, Version 3.1
(Lichvar, R.W. 2013. The National Wetland Plant List: 2013 wetland ratings. Phytoneuron 2013-49: 1-241). Click here
for map of regions.
From the National Organizations Directory
According to the species list provided by Affiliate Organizations, this plant is either on display or available from the following:
Lady Bird Johnson Wildflower Center
- Austin, TX
Record Last Modified: 2007-01-01
Research By: TWC Staff