Helianthus petiolaris

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Scientific Name Helianthus petiolaris USDA PLANTS Symbol
HEPE
Common Name Prairie Sunflower ITIS Taxonomic Serial No.
36671
Family Asteraceae (Sunflower) SEINet
Reference
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Description Life zones and habitat: Semi-desert to montane; sunny, dry areas.
Plant: Erect annual 1-1/2 to over 6 feet tall, often-branched stem with fine hairs.
Leaves: Mostly along stems, lanceolate to ovate, 1-1/2 to 6 inches long, petiolate, may be dotted with glands, hairy underneath, small teeth along edges.
Inflorescence: Single composite flowers 2 to 3 inches across with 10 to 30 yellow rays and 50 to 100+ reddish disk florets in the center. Resembles Common Sunflower (H. annuus) except for the leaves.
References: Descr. adapted from "Flora of Colorado" by Jenifer Ackerfield and SEINet.
Colorado Status
Native

© Tom Lebsack 2018