NameThatPlant.net: Helianthus occidentalis ssp. occidentalis

Spermatophytes (seed plants): Angiosperms (flowering plants): Eudicots: Core Eudicots: Asterids: Campanulids: Asterales

WEAKLEY'S FLORA OF THE SOUTHEASTERN US (4/24/22):
Helianthus occidentalis ssp. occidentalis FAMILY Asteraceae Go to FSUS key

Dig deeper at SERNEC, a consortium of southeastern herbaria.

Read more about Helianthus at Vascular Plants of North Carolina.

SYNONYMOUS WITH PLANTS NATIONAL DATABASE:
Helianthus occidentalis ssp. occidentalis FAMILY Asteraceae

SYNONYMOUS WITH Flora of North America

Helianthus occidentalis ssp. occidentalis

INCLUDING Vascular Flora of the Southeastern States (Cronquist 1980, Isely 1990)

Helianthus occidentalis var. dowellianus

INCLUDING Flora of West Virginia (Strausbaugh & Core, 1978)

Helianthus dowellianus

SYNONYMOUS WITH VASCULAR FLORA OF THE CAROLINAS (Radford, Ahles, & Bell, 1968) 179-65-007:

Helianthus occidentalis FAMILY Asteraceae

SYNONYMOUS WITH Manual of the Southeastern Flora (Small, 1933, 1938)

Helianthus occidentalis

COMMON NAME:
Naked-stem Sunflower, Fewleaf Sunflower, Western Sunflower

To see larger pictures, click or hover over the thumbnails.

image of Helianthus occidentalis ssp. occidentalis, Naked-stem Sunflower, Fewleaf Sunflower, Western Sunflower

Richard and Teresa Ware rtw_h_occidentalis_occi_2

August

Flower heads 2-3" across, terminating stem & branches, with 10-15 rays, per Wildflowers of Tennessee (Carman, 2005).

Richard and Teresa Ware rtw_h_occidentalis_occi_4

August

Leaves basally disposed and long-stalked, the almost entire blades 3-6" long, per Wildflowers of Tennessee (Carman, 2005).

WEAKLEY'S FLORA OF THE SOUTHEASTERN US (4/24/22):
Helianthus occidentalis ssp. occidentalis FAMILY Asteraceae

SYNONYMOUS WITH PLANTS NATIONAL DATABASE:
Helianthus occidentalis ssp. occidentalis FAMILY Asteraceae

SYNONYMOUS WITH Flora of North America
Helianthus occidentalis ssp. occidentalis

INCLUDING Vascular Flora of the Southeastern States (Cronquist 1980, Isely 1990)
Helianthus occidentalis var. dowellianus

INCLUDING Flora of West Virginia (Strausbaugh & Core, 1978)
Helianthus dowellianus

SYNONYMOUS WITH VASCULAR FLORA OF THE CAROLINAS (Radford, Ahles, & Bell, 1968) 179-65-007:
Helianthus occidentalis FAMILY Asteraceae

SYNONYMOUS WITH Manual of the Southeastern Flora (Small, 1933, 1938)
Helianthus occidentalis

3389

Forb
Perennial

Habitat: Rocky or sandy flood-scoured riversides, dry hammocks (in FL), per Weakley's Flora

Native to the Carolinas & Georgia

Rare (extirpated from NC Mountains)

map
Click here to see a map, notes, and images from Weakley's Flora of the Southeastern US.

Click here to see a map showing all occurrences known to SERNEC, a consortium of southeastern herbaria. (Zoom in to see more detail.)

LEAVES:
Simple
Opposite (basal rosette often absent or withered at flowering)

FLOWER:
Summer/Fall
Rays: Yellow
Disc: Yellow
Disc flowers bisexual & fertile/ Ray flowers pistillate but sterile
Inferior ovary

FRUIT:
Achene

TO LEARN MORE about this plant, look it up in a good book!