Helianthus species

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Scientific Name Helianthus annuus USDA PLANTS Symbol
HEAN3
Common Name Sunflower, Common Sunflower ITIS Taxonomic Serial No.
36616
Family Asteraceae (Sunflower) SEINet Reference
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Description Habitat: Dry soils, disturbed areas, fence rows. Widely distributed.
Plant: Erect annual, widely branching 1-1/2 to 8 feet tall, rough, hairy stems.
Leaves: Hairy, alternate, ovate leaves 2-1/2 to 10 inches long and nearly as wide on long petioles (stalks); cordate bases.
Inflorescence: Bright yellow composite flower heads up to 4 inches across with 17 to 30 ray florets (petals) surrounding brown central disk florets.
Reference: Excerpts from "Wildflowers of the Texas Hill Country" by Marshall Enquist and SEINet.
Texas Status
Native
Scientific Name Helianthus maximiliani USDA PLANTS Symbol
HEMA2
Common Name Maximilian Sunflower ITIS Taxonomic Serial No.
36653
Family Asteraceae (Sunflower) SEINet Reference
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Description Habitat: Dry areas in prairies or moist areas along streams or in ditches.
Plant: Erect perennial, single or multiple leafy unbranched stems 1 to 6 feet tall.
Leaves: Alternate, lanceolate leaves pointed at both ends, usually 2 to 4 inches long, but can be longer; edges are entire (not lobed or toothed).
Inflorescence: Bright yellow composite flower heads 1-1/2 to 3 inches across with 10 to 25 ray florets (petals) surrounding yellow central disk florets.
Reference: Excerpts from "Wildflowers of the Texas Hill Country" by Marshall Enquist.
Texas Status
Native

© Tom Lebsack 2017