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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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Sclerocarpus uniserialis (Mexican bonebract)
Bransford, W.D. and Dolphia

Sclerocarpus uniserialis

Sclerocarpus uniserialis (Benth.) Hemsl.

Mexican Bonebract, Border Bonebract

Asteraceae (Aster Family)


USDA Symbol: SCUN2

USDA Native Status: L48 (N)


From the Image Gallery

7 photo(s) available in the Image Gallery

Plant Characteristics

Duration: Annual
Habit: Herb
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 Information

Bloom Color: Red , Yellow , Purple
Bloom Time: Jan , Feb , Jun , Jul , Aug , Sep , Oct , Nov , Dec
Bloom Notes: Yellow disc corollas usually with reddish (sometimes purple) veins.




Fragrant Flowers: yes

Herbarium Specimen(s)

NPSOT 1110 Collected Aug 17, 1993 in Bexar County by Harry Cliffe
NPSOT 1088 Collected Oct 12, 1996 in Comal County by Mary Beth White

2 specimen(s) available in the Digital Herbarium

Web Reference

Webref 38 - Flora of North America (2019) Missouri Botanical Garden, St. Louis, MO & Harvard University Herbaria, Cambridge, MA.

Additional resources

USDA: Find Sclerocarpus uniserialis in USDA Plants
FNA: Find Sclerocarpus uniserialis in the Flora of North America (if available)
Google: Search Google for Sclerocarpus uniserialis


Record Modified: 2023-01-13
Research By: TWC Staff

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