Texas Wildbuds
Thymophylla acerosa
(Pricklyleaf Dogweed)
Thymophylla acerosa, East Contrabando Trails, Big Bend Ranch State Park 4721
Thymophylla acerosa, Lake Colorado City State Park, Mitchelll Co. 2968
Thymophylla acerosa, Lake Colorado City State Park, Mitchelll Co. 2980
Thymophylla acerosa, East Contrabando Trails, Big Bend Ranch State Park 4707
Thymophylla acerosa, East Contrabando Trails, Big Bend Ranch State Park 4713
Thymophylla acerosa, Grapevine Hills, Big Bend National Park 3547
Thymophylla acerosa, Grapevine Hills, Big Bend National Park 3542
Thymophylla acerosa, Lake Colorado City State Park, Mitchelll Co. 3025
| Scientific Name | Thymophylla acerosa (Dyssodia acerosa) | USDA PLANTS Symbol | THAC |
| Common Name | Pricklyleaf Dogweed | ITIS Taxonomic Serial No. | 505493 |
| Family | Asteraceae (Sunflower) | SEINet Reference |
Click Here |
| Description | Habitat: Dry, rocky, calcareous soils. Plant: Short perennial 4 to 10 inches tall; woody branches from base; strong odor. Leaves: Very narrow, pointed opposite, linear leaves 3/8 to 3/4 inches long. Inflorescence: Composite flower heads sessile or on short peduncles less than 3/8-inch long; heads about 1 inch across, with 7 or 8 (or a few more) yellow rays and 18 to 25 yellow disk florets in the center; involucre with 8 to 14 the phyllaries fused together almost to the tips and gland-dotted; set of 5 smaller bractlets below the flower head. Bloom Period: Throughout the year, mostly summer and fall. References: SEINet and Southwest Desert Flora. Note: Previously misidentified; corrected thanks to Chuck Sexton of Austin, TX. |
BONAP Distribution Map Map Color Key |
Texas Status: Native |
Banner photo of Castilleja indivisa and Lupinus ssp. taken along FM 1323 north of Johnson City, Blanco County
© Tom Lebsack 2025