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Stylophorum diphyllum

Stylophorum diphyllum (Michx.) Nutt.

 

Yellow Wood Poppy, Celandine Poppy

KingdomPlantaePlants, but not fungi, lichens, or algae
SubkingdomTracheobiontaVascular plants—plants with a “circulatory system” for delivering water and nutrients
DivisionMagnoliophytaFlowering plants, also known as angiosperms
ClassMagnoliopsidaDicotyledons—plants with two initial seed leaves
SubclassMagnoliidaeIncludes magnolias, nutmeg, bay laurel, cinnamon, avocado, black pepper, and many others
OrderPapaveralesA group that includes buttercups and other poisonous plants
FamilyPapaveraceaePoppy family
GenusStylophorumFrom the Greek words stylos, “style,” and phoros, “bearing” with reference to the long columnar style
SpeciesdiphyllumWith two leaves or leaflets

About plant names...

It is not known whether celandine poppies originated in Europe or the southern United States. They prefer dry deciduous woodlands, bases of bluffs, and rocky stream banks.

Plants: Plants reach 12-18" (30-45 cm). Stems and leaves exude a bright yellow-orange sap when cut.

Leaves: This plant has basal leaves, as well as a pair of opposite leaves on the stem, both up to 6" (15 cm) × 4" (10 cm). Leaves are divided into 3-5 lobes which in turn are further divided, making them bipinnatifid. Leaf surfaces are dark green and hairless, while leaf undersides are pale as a result of fine hairs. Leaf stems (petioles) are up to 4" (10 cm) long.

Flowers: Each flower has four partially overlapping yellow petals, two sepals (which fall away early after flowering), a knobby stigma, and multiple yellow-orange stamens. They appear in groups of one to four, and are 1¼-2" (3.2-5.7 cm) around. Flowers May-June.

Fruits: Bristly blue-green ovoid seed pods, divided into four segments, ¾-1" (1.9-2.5 cm).

Sometimes these are confused:

 

Stylophorum diphyllum (Yellow Wood Poppy, Celandine Poppy)

5/16/2014 · Acton Arboretum, Action, MA
≈ 10 × 7" (25 × 16 cm)

Stylophorum diphyllum (Yellow Wood Poppy, Celandine Poppy)

5/16/2014 · Acton Arboretum, Action, MA
≈ 8 × 5" (19 × 12 cm)

Stylophorum diphyllum (Yellow Wood Poppy, Celandine Poppy)

5/27/2016 · Acton Arboretum, Acton, MA

  You are here
Stylophorum diphyllum

Ranunculus ficaria

Chelidonium majus
Common Name

Yellow Wood Poppy

Lesser Celandine

Greater Celandine
Plant Plants reach 12-18" (30-45 cm). Stems and leaves exude a bright yellow-orange sap when cut. Low-growing, 4-14" (10-35 cm) in height. It is a perennial that stores energy in numerous white finger-like tubers. Greater celandine reaches 18-24" (45-60 cm) in height, with ribbed stems. Leaves contain an irritating yellow-orange sap.
Flowers Each flower has four partially overlapping yellow petals, two sepals (which fall away early after flowering), a knobby stigma, and multiple yellow-orange stamens. They appear in groups of one to four, and are 1¼-2" (3.2-5.7 cm) around. Flowers May-June. Up to 1" (2.5 cm) around, with 7-12 glossy yellow petal-like tepals, and 3 sepal-like tepals (confused yet?). They appear as early as February, or, further north, from April-May. About ¾" (1.9 cm) around, with four yellow non-overlapping petals, a stiff green central style, and multiple yellow stamens.
Leaves This plant has basal leaves, as well as a pair of opposite leaves on the stem, both up to 6" (15 cm) × 4" (10 cm). Leaves are divided into 3-5 lobes which in turn are further divided, making them bipinnatifid. Leaf surfaces are dark green and hairless, while leaf undersides are pale as a result of fine hairs. Leaf stems (petioles) are up to 4" (10 cm) long. Thick, heart-shaped (cordate), spirally arranged, ¾-1½" (1.9-3.8 cm), on long stems (petioles). Leaves are sometimes mottled with darker green patches. Up to 8" (20 cm) long and 3" (7.6 cm) wide, compound in groups of 5 to 9, green with a slight bluish tint.
Fruit Bristly blue-green ovoid seed pods ¾-1" (1.9-2.5 cm). Achenes are spherical, up to ⅜" (1.3 cm) around. Seed capsules look like thin beans, ¾-2½" (1.9-6.3 cm) long, with black seeds.
Range/ Zones

USDA Zones: 4-9

USDA Zones: 4-8
Habitats Dry deciduous woodlands, bases of bluffs, and rocky stream banks. It prefers damp shady areas, and weedy places. It often carpets large areas. Moist or dry woods, thickets, fields, hedgerows, roadsides, railroads
Type Wild Wild Wild
Occurrence     Common

 

Online References:

Stylophorum diphyllum at Illinois Wildflowers

Stylophorum diphyllum on Discover Life (Good photos)

Stylophorum diphyllum on www.nanps.org

Stylophorum diphyllum on Wikipedia

Stylophorum diphyllum at the Missouri Botanical Garden

Stylophorum diphyllum on Taste of the Wild

Stylophorum diphyllum on eFloras

References:

Clemants, Steven; Gracie, Carol, Wildflowers in the Field and Forest, Oxford University Press, 2006, p. 214

Stylophorum diphyllum (Yellow Wood Poppy, Celandine Poppy)

5/14/2012 · Acton Arboretum, Acton, MA
≈ 7 × 4½" (17 × 11 cm)

Stylophorum diphyllum (Yellow Wood Poppy, Celandine Poppy)

5/16/2014 · Acton Arboretum, Action, MA
≈ 9 × 6" (22 × 15 cm)

Stylophorum diphyllum (Yellow Wood Poppy, Celandine Poppy)

5/27/2016 · Acton Arboretum, Acton, MA

Stylophorum diphyllum description by Thomas H. Kent, last updated 24 Jun 2017.

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Stylophorum diphyllum (Yellow Wood Poppy, Celandine Poppy)

5/14/2012 · Acton Arboretum, Acton, MA
≈ 21 × 14" (52 × 34 cm)

Stylophorum diphyllum (Yellow Wood Poppy, Celandine Poppy)

5/16/2014 · Acton Arboretum, Action, MA
≈ 8 × 5" (20 × 13 cm)

Stylophorum diphyllum (Yellow Wood Poppy, Celandine Poppy)

5/16/2014 · Acton Arboretum, Action, MA
≈ 12 × 8" (31 × 21 cm)

Range: Zones 4-9:

About this map...