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Stylophorum diphyllum (Michx.) Nutt.
Celandine poppy, Yellow wood poppy
USDA Symbol: stdi3
USDA Native Status: Native to U.S.
This 12-14 in. perennial with gray-green, lobed and toothed leaves is known for its large, poppy-like, yellow flowers. The stalks are leafy and the flowers are produced in clusters. A plant with yellow sap and yellow flowers, solitary or in small clusters, atop a stem bearing a pair of deeply lobed leaves; other leaves basal.
This is a fine species to grow in Eastern wildflower gardens, far less aggressive than the introduced European species. The species name, Greek for two-leaved, refers to the pair of opposite leaves below the flower.
Occurs in nature from western Pennsylvania north to Wisconsin and Michigan, south to Arkansas, Tennessee, and southwestern Virginia, with isolated populations in northern Alabama and southern Ontario. Because its range is so limited in that province, it is listed as a Species Endangered by Canadas SARA (Species at Risk Act) and by COSEWIC (Committee on the Status of Endangered Wildlife in Canada).
Plant CharacteristicsDuration: Perennial Habit: Herb Leaf Arrangement: Alternate Leaf Complexity: Simple Size Notes:
Normally 1 to 2 feet Flower:
Flowers 1 to 2 inches across
1 inch Size Class:
Bloom InformationBloom Color: Orange , Yellow
Bloom Time: Mar , Apr
Bloom Notes: Usually yellow but can be more of an orange.
AL , AR , DC , DE , GA , IL , IN , KY , MD , MI , MO , OH , PA , TN , VA , WV Canada: ON Native Distribution:
W. PA (possibly) n. to WI and MI, s. to s.w. VA, TN, & AR, with isolated populations in southern Ontario and northern AL. Somewhat uncommon, with spotty distribution Native Habitat:
woods; calcareous bluffs USDA Native Status: L48(N), CAN(N)
Growing ConditionsWater Use: Medium
Light Requirement: Part Shade , Shade
Soil Moisture: Moist
Soil pH: Acidic (pH<6.8)
Drought Tolerance: Low
Soil Description: Rich, acidic, well-drained soils. Tolerates lime.
Conditions Comments: Requires moisture throughout summer, leaves will wither and turn yellow during drought.
BenefitUse Ornamental: Lends brilliant yellow to orange color to shady eastern woods and gardens.
Use Wildlife: Chipmunks feed on seeds.
Conspicuous Flowers: yes
Root Division , Seeds Description:
Propagate by seed or division. Divide large rhizomes with many eyes, leaving two eyes in each division. Growth may be quite slow. Seeds must be sown as soon as they ripen. Seed Collection:
The dry fruit
is rough, hairy and spindle-shaped. Seed must not be allowed to dry out. Commercially Avail:
May want to protect seeds from chipmunks. Readily self sows.
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:
Delaware Nature Society
- Hockessin, DE
Recommended Species Lists
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Record Modified: 2012-10-03
Research By: TWC Staff