Helianthus divaricatus L. - Woodland Sunflower

Helianthus divaricatus plant

Family - Asteraceae

Stems:

Helianthus divaricatus rootRoot.

Helianthus divaricatus stem

Leaves:

Helianthus divaricatus leaves

Helianthus divaricatus leaf baseLeaf base.

Helianthus divaricatus leaf adaxialAdaxial surface of leaf.

Helianthus divaricatus leaf abaxialAbaxial surface of leaf.

Inflorescence:

N/A

Involucre:

Helianthus divaricatus involucre

Ray flowers:

Helianthus divaricatus flowers

Disk flowers:

Helianthus divaricatus disk

Flowering - June - September.

Habitat - Woodlands, roadsides.

Origin - Native to North America.

Other information - This attractive species can be found scattered throughout Alabama. The plant can be identified by its long rhizomes, thin stems (which are typically somewhat glaucous and brownish-purple), spreading, sessile leaves, and typically single, terminal flower head. The leaves are harshly scabrous and have rounded bases. The stems are typically glabrous but have some hairs near the apex of the internodes.
The genus name Helianthus derives from the Greek "helio" meaning "sun" and "anth(us)" meaning "flower."
The species epithet divaricatus derives from the Latin "divaric(a)" meaning "spread apart" referring to the leaves.

Alabama Distribution:

Helianthus divaricatus map

Photographs taken at Fort Benning, GA., 7-3-05.


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