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Cup-Plant (Silphium perfoliatum)
Image ID: 2019/oth34
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Native
Family:
Asteraceae (Sunflower)
Height: 3 to 12 ft.
(shrub)
Blooms: July to
September
Leaf Type:
toothed
Bloom Size: 3 in. (typical)
Flower Description:
Individual flowers,
Parts indistinct
Date: 8/10/2019
Notes:
Alternate leaves fuse around the stem to create a cup. Although this plant is native to much of the U.S., it has become invasive in some parts of New England.
More photos of this flower
Cup-Plant may be
easily confused with:
- Large-Flowered Leafcup
Leaves of cup-plant join around the stem, forming a distinctive 'cup.'
- Pale-Leaved Sunflower
Leaves of cup-plant join around the stem, forming a distinctive 'cup.'
- Sneezeweed
Leaves of cup-plant join around the stem, forming a distinctive 'cup.'
- Tall Coneflower
Leaves of cup-plant join around the stem, forming a distinctive 'cup.'
- Thin-Leaved Sunflower
Leaves of cup-plant join around the stem, forming a distinctive 'cup.'
- Whorled Rosinweed
Leaves of cup-plant join around the stem, forming a distinctive 'cup.'
- Woodland Sunflower
Leaves of cup-plant join around the stem, forming a distinctive 'cup.'
We started out as wildflowers from the bicycle trails of western Pennsylvania, but we've
grown!
Meyer, Joseph E. (1918). The Herbalist and Herb Doctor. Hammond, Ind.: Indiana Herb Gardens. 400 pp.
