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Silphium trifoliatum var. trifoliatum
Silphium trifoliatum L. var. trifoliatum
Whorled Rosinweed
Asteraceae (Aster Family)
Synonym(s): Silphium atropurpureum, Silphium laevigatum
USDA Symbol: SITRT
USDA Native Status: L48 (N)
Plant Characteristics
Duration: PerennialHabit: Herb
Size Notes: Up to about 4-1/2 feet tall.
Fruit: Fruit is a cypsela (pl. cypselae). Though technically incorrect, the fruit is often referred to as an achene.
Bloom Information
Bloom Color: YellowBloom Time: Jul , Aug , Sep
Distribution
USA: AL , DC , IL , IN , KY , MD , NC , NY , PA , SC , TN , VA , WVFrom the National Organizations Directory
According to the species list provided by Affiliate Organizations, this plant is on display at the following locations:Mt. Cuba Center - Hockessin, DE
Web Reference
Webref 38 - Flora of North America (2019) Missouri Botanical Garden, St. Louis, MO & Harvard University Herbaria, Cambridge, MA.Additional resources
USDA: Find Silphium trifoliatum var. trifoliatum in USDA PlantsFNA: Find Silphium trifoliatum var. trifoliatum in the Flora of North America (if available)
Google: Search Google for Silphium trifoliatum var. trifoliatum
Metadata
Record Modified: 2023-01-16Research By: SET