Robert W. Freckmann Herbarium


  Helianthus occidentalis Riddell subsp. occidentalis image
Photographer: Kenneth J. Sytsma           

Emmet J. Judziewicz

Emmet J. Judziewicz

Merel R. Black

Merel R. Black

Christopher Noll
Family Asteraceae
Helianthus occidentalis Riddell subsp. occidentalis
few-leaved sunflower, naked-stemmed sunflower, western sunflower
Helianthus: derived from two Greek words helios, "sun," and anthos, "flower," in reference to the sunflower's supposed tendency to always turn toward the sun
occidentalis: Latin for "western"
County distribution map- click for detailed distribution maps.
Detailed Distribution:
Town Range Maps
Google Dot Maps
Status: Native
Plant: erect, perennial, 2'-5' tall forb; stems with a few, small leaves
Flower: head 1 1/2" - 2 3/4" wide with 10-15 yellow rays, disk yellow; inflorescence of several heads in loosely-branched clusters; blooms July-Sept.
Leaf:largest leaves basal on very long stalks, only 3-8 small opposite pairs on the stemsleaf drawing
Habitat: full sun; dry to moderate moisture; prairies; in rocky, sandy, loamy soil
(Glossary)

More Information Natural Communities Herbarium Specimens
All Helianthus list Ethnobotany Information Google- Images or Text

Flora of North America (off site)
Synonyms 
Helianthus dowellianus M.A.Curtis
Helianthus occidentalis Riddell var. dowellianus (M.A.Curtis) Torr. & A.Gray
Helianthus occidentalis Riddell var. occidentalis

         
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