Parthenium confertum
(Gray’s Feverfew)
Parthenium confertum, Ernst Tinaja, Big Bend National Park 2381
Parthenium confertum, Ernst Tinaja, Big Bend National Park 3160
Parthenium confertum, Lajitas Airport Trails, Brewster Co. 5055/5068
Parthenium confertum, Lajitas Airport Trails, Brewster Co. 5098/5117
Parthenium confertum, South Slick Rock Trail, San Angelo State Park, Tom Green Co. 1237
Parthenium confertum, South Slick Rock Trail, San Angelo State Park, Tom Green Co. 1238
| Scientific Name | Parthenium confertum | USDA PLANTS Symbol | PACO11 |
| Common Name | Gray's Feverfew, Lyreleaf Parthenium | ITIS Taxonomic Serial No. | 38163 |
| Family | Asteraceae (Sunflower) | SEINet Reference |
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| Description | Habitat: Sandy soils in open areas in desert scrub, canyon bottoms, and plains; below 6,000 ft. Plant: Erect biennial or perennial4 to 24 inches tall, one to a few stems branching above, with longitudinal striations and covered with long hairs. Leaves: Blades ovate or rounded-deltate to elliptic in outline, 1 to 4-3/4 inches long and 3/4 to 1-1/2 inches wide, pinnately or sub-bipinnately lobed to lyrate, with erect hairs and dotted with glands. Inflorescence: Open panicles of numerouscomposite white flower heads, each 3/16-inch across; each head with 20 to 30 disk florets and 5 small pistillate florets around the outer edge.. Bloom Period: March to October. References: "Manual of the Vascular Plants of Texas" by Correll and Johnston, "Wildflowers of Texas" by Michael Eason and SEINet. |
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 2024