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| Scientific Name | Thymophylla acerosa (Dyssodia acerosa) | USDA PLANTS Symbol | THAC |
| Common Name | Pricklyleaf Dogweed | ITIS Taxonomic Serial No. | 505493 |
| Family | Asteraceae (Sunflower) | SEINet Reference |
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| 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 about 1 inch across, with 7 to 9 or more yellow rays and 18 to 25 yellow disk florets in the center. 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 |
Texas Status: Native |
| Scientific Name | Thymophylla pentachaeta (Dyssodia pentachaeta) | USDA PLANTS Symbol | THPE4 |
| Common Name | Five-needle Pricklyleaf, Parralena | ITIS Taxonomic Serial No. | 505497 |
| Family | Asteraceae (Sunflower) | SEINet Reference |
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| Description | Habitat: Dry, gravelly, calcareous soils. Plant: Low-growing, strong-scented, branched annual or short-lived perennial 6 to 12 inches tall. Leaves: Opposite grayish-green to dark green leaves divided into 5-11 narrow, stiff, hairy lobes with glands. Inflorescence: Bright yellow composite flower heads about 5/8-inch across on stalks up to 4 inches long with 12 to 21 rays and 16 to 70 disk florets in the center; phyllaries below are dotted with dark glands. Bloom Period: Most of the year. References: "Wildflowers of Texas" by Geyata Ajilvsgi and SEINet. |
BONAP Distribution Map |
Texas Status: Native |
