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Plant Database

Search for native plants by scientific name, common name or family. If you are not sure what you are looking for, try the Combination Search or our Recommended Species lists.

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Holocarpha obconica ssp. autumnalis

Holocarpha obconica (J.C. Clausen & D.D. Keck) D.D. Keck ssp. autumnalis D.D. Keck

San Joaquin Tarweed

Asteraceae (Aster Family)



USDA Native Status: L48 (N)


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Plant Characteristics

Duration: Annual
Habit: Herb
Size Notes: Up to about 4 feet tall.
Fruit: Fruit is a cypsela (pl. cypselae). Though technically incorrect, the fruit is often referred to as an achene.

Bloom Information

Bloom Color: Yellow
Bloom Time: Apr , May , Jun , Jul , Aug , Sep , Oct , Nov
Bloom Notes: Anthers yellow to brownish, 4-9 ray florets, 11-21 disc florets.



Web Reference

Webref 30 - Calflora (2018) Calflora
Webref 3 - Flora of North America (2014) Missouri Botanical Garden, St. Louis, MO & Harvard University Herbaria, Cambridge, MA.

Additional resources

USDA: Find Holocarpha obconica ssp. autumnalis in USDA Plants
FNA: Find Holocarpha obconica ssp. autumnalis in the Flora of North America (if available)
Google: Search Google for Holocarpha obconica ssp. autumnalis


Record Modified: 2019-03-29
Research By: CBR

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