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Heterotheca subaxillaris (Lam.) Britton & Rusby
Camphorweed, Camphor Weed
Asteraceae (Aster Family)
Synonym(s): Chrysopsis scabra, Heterotheca lamarckii, Heterotheca latifolia, Heterotheca latifolia var. arkansana, Heterotheca latifolia var. macgregoris, Heterotheca psammophila, Heterotheca scabra, Heterotheca subaxillaris var. latifolia, Heterotheca subaxillaris var. petiolaris, Heterotheca subaxillaris var. procumbens, Heterotheca subaxillaris var. psammophila
USDA Symbol: HESU3
USDA Native Status: L48 (N)
Yellow daisylike flower heads on tall, hairy stems; plant often has 1-sided, unbalanced look.
This native annual or biennial has been extending its range northward. It is unpalatable to grazing livestock on open range.
From the Image Gallery
Plant CharacteristicsDuration: Annual
Size Notes: Up to about 6 feet tall.
Fruit: Fruit is a cypsela (pl. cypselae). Though technically incorrect, the fruit is often referred to as an achene.
Bloom InformationBloom Color: Yellow
Bloom Time: Mar , Apr , May , Jun , Jul , Aug , Sep , Oct , Nov , Dec
DistributionUSA: AL , AR , AZ , CA , CO , CT , DE , FL , GA , IA , IL , IN , KS , KY , LA , MD , MO , MS , NC , NE , NJ , NM , NV , NY , OK , PA , SC , TN , TX , UT , VA
Native Distribution: New Jersey and Delaware south to Florida; west to Texas, north to Kansas and Illinois.
Native Habitat: Sandy soils of prairies, waste places, and roadsides.
From the National Organizations DirectoryAccording to the species list provided by Affiliate Organizations, this plant is on display at the following locations:
Lady Bird Johnson Wildflower Center - Austin, TX
Brackenridge Field Laboratory - Austin, TX
Nueces River Authority - Uvalde, TX
Stengl Biological Research Station - Smithville, TX
Herbarium Specimen(s)NPSOT 0622 Collected Nov19,1993 in Bexar County by Judith C. Berry
NPSOT 0482 Collected Jul 30, 1993 in Atascosa County by Louise Morrell
NPSOT 0976 Collected Oct 30, 1994 in Bexar County by Mike Fox
Wildflower Center Seed BankLBJWC-0145 Collected 2007-09-03 in Travis County by Lady Bird Johnson Wildflower Center
Web ReferenceWebref 38 - Flora of North America (2019) Missouri Botanical Garden, St. Louis, MO & Harvard University Herbaria, Cambridge, MA.
Additional resourcesUSDA: Find Heterotheca subaxillaris in USDA Plants
FNA: Find Heterotheca subaxillaris in the Flora of North America (if available)
Google: Search Google for Heterotheca subaxillaris
MetadataRecord Modified: 2022-12-28
Research By: TWC Staff