Family: Asteraceae

Scientific Name: Silphium perfoliatum var. connatum

Common Name: Cup Plant

Description

Cup Plant (Silphium perfoliatum var. connatum) A variety of the more common and wide spread Cup Plant (S. perfoliatum). It has variously hairy stems and is only known from a few Mid-Atlantic states in the New River Valley.

Plant TypePerennials Hardy, Wild Flowers
Hardiness Zone(5)6
Sunlightfull, mostly sunny
Moistureaverage, moist
Soil & Siteaverage, moist
Flowersyellow daisy-like flowers are found on tall single scapes (flower stalks)
Fruitachene
Leavesopposite leaves, coarsely toothed, form a water reservoir where they join at the stem, two leaves join together around the stem (perfoliate) visited by birds and Hummingbirds.
Stemssquare, hairy
Dimensions6 plus feet tall
Native SiteNot as wide spread as Silphium perfoliatum found in a few Mid-Atlantic states in the New River Valley.
Misc FactsSpecies name refers to where the bases of two opposite leaves wrap completely around the stem.
Author's NotesNot a lot of data on this plant. Most searches will get Silphium perfoliatum not the variety connatum.
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