Gutierrezia microcephalum
(Smallhead Snakeweed)
Gutierrezia microcephalum, Lost Mine Trail, Big Bend National Park 1122
Gutierrezia microcephalum, Lost Mine Trail, Big Bend National Park 1145
Gutierrezia microcephalum, Lost Mine Trail, Big Bend National Park 1133
Gutierrezia microcephalum, Lost Mine Trail, Big Bend National Park 1127
Gutierrezia microcephalum, Lost Mine Trail, Big Bend National Park 1129
| Scientific Name | Gutierrezia microcephala (Xanthocephalum microcephalum) | USDA PLANTS Symbol | GUMI |
| Common Name | Threadleaf Snakeweed, Smallhead Snakeweed | ITIS Taxonomic Serial No. | 37482 |
| Family | Asteraceae (Sunflower) | SEINet Reference |
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| Description | Habitat: Dry, gravelly or rocky limestone or gypsum soils in grasslands, brushlands or woodlands, often in disturbed or overgrazed areas; from 1,000 to 7,000 ft. Plant: Perennial subshrub 12 to 40 inches tall, leafy, much-branched stems from a woody base. Leaves: Alternate, primary leaves linear to linear-oblanceolate, 3/4 to 2 inches long and about 3/16-inch or less wide; often deciduous by flowering; clusters of shorter and narrower secondary leaves in axils of primary leaves; surfaces usually smooth and sticky. Inflorescence: Many small composite yellow flower heads usually in clusters of 3 or more in corymbs atop the stems; each small blossom with 1 or 2 ray florets about 3/16-inch long and usually just one disk floret; phyllaries whitish or yellowish with green tips. Bloom Period: June to October. References: "Manual of the Vascular Plants of Texas" by Correll and Johnston, Flora of North America 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