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| Scientific Name | Parthenium confertum | USDA PLANTS Symbol |
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| Common Name | Lyreleaf Parthenium, Gray's Feverfew | ITIS Taxonomic Serial No. |
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| 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: Biennial 4 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, with erect hairs and dotted with glands. Inflorescence: Terminal cluster of composite white flower heads, each 3/16-inch across, with 5 ray florets surrounding 20 to 30 or more disk florets. Bloom Period: March to October. References: SEINet. |
BONAP Distribution Map |
Texas Status: Native |
| Scientific Name | Parthenium incanum | USDA PLANTS Symbol |
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| Common Name | Mariola | ITIS Taxonomic Serial No. |
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| Family | Asteraceae (Sunflower) | SEINet Reference |
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| Description |
Habitat: Desert scrub, gravelly slopes and plains, open areas, limestone soils, 2,500 to 5,000 ft. Plant: Perennial shrub with gray-green foliage; low-growing, 12 to 40 inches tall; multiple branches from base, woody below. Leaves: Leaf shape broadly ovate overall, 3/8 to 2-3/8 inches long and up to 3/4 inch wide, irregularly lobed or pinnatifid, on short petioles; very short hairs on both surfaces, especially dense on lower; surfaces dotted with glands. Inflorescence: Terminal cluster of composite white flower heads, each 3/16-inch across, with 5 ray florets surrounding 8 to 20 or more disk florets. Bloom Period: June to October. References: ”Manual of the Vascular Plants of Texas" by Correll and Johnston and SEINet. |
BONAP Distribution Map |
Texas Status: Native |
