Texas Wildbuds
Packera glabella
(Butterweed)
Packera glabella, Caddo Lake State Park, Harrison Co. 3420
Packera glabella, Caddo Lake State Park, Harrison Co. 0950
Packera glabella, Caddo Lake State Park, Harrison Co. 0927
Packera glabella, Caddo Lake State Park, Harrison Co. 0926
Packera glabella, Caddo Lake State Park, Harrison Co. 0941
Packera glabella, Caddo Lake State Park, Harrison Co. 0948
Packera glabella, Caddo Lake State Park, Harrison Co. 3427
| Scientific Name | Packera glabella (Senecio glabellus) | USDA PLANTS Symbol | PAGL17 |
| Common Name | Butterweed, Cress-Leaf Groundsel | ITIS Taxonomic Serial No. | 565358 |
| Family | Asteraceae (Sunflower) | SEINet Reference |
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| Description | Habitat: Moist soils in open wet areas, edges of woodlands, stream banks, marshes, roadsides, meadows, and fields. Plant: Upright annual or biennial 8 to 28+ inches tall; single, stout, hollow, stem that is striated and hairless. Leaves: Basal (and lower stem) leaves obovate to oblanceolate in outline, pinnately-lobed (or sometimes lyrate) with up to 5 pairs of (usually) obovate lobes, the end lobe larger than laterals and nearly orbicular; overall 2 to 6+ inches long and 3/8 to 1-1/4+ inches wide; lobe margins are crenate to undulate; stem leaves are alternate and otherwise similar to lower but gradually smaller upward. Inflorescence: Flat-headed umbels of flowerheads at the tips of central stem and any lateral stems; up to 30 flowerheads crowded together initially, spreading out with age, forming an inflorescence up to 6 inches across; each flowerhead about 1-inch across with 8 to 13 yellow rays and 35 to 50+ yellow disk florets in the center; involucre with a single layer of light green, linear, smooth phyllaries. Bloom Period: March to May. References: "Wildflowers of Texas" by Michael Eason, Flora of North America and Illinois Wildflowers; Senecio glabellus in "Manual of the Vascular Plants of Texas" by Correll and Johnston. |
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
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