Solanum rostratum
(Buffalo Bur)
Solanum rostratum, Lathrop State Park, Huerfano Co. 7560
Solanum rostratum, Overland Trail Recreation Area, Sterling, Logan Co. 7287
Solanum rostratum, Overland Trail Recreation Area, Sterling, Logan Co. 7278
Solanum rostratum, Overland Trail Recreation Area, Sterling, Logan Co. 7271
Solanum rostratum, Overland Trail Recreation Area, Sterling, Logan Co. 7273
Solanum rostratum, Lathrop State Park, Huerfano Co. 7566
Solanum rostratum, Lathrop State Park, Huerfano Co. 7563
| Scientific Name | Solanum rostratum | USDA PLANTS Symbol | SORO |
| Common Name | Buffalo Bur | ITIS Taxonomic Serial No. | 30454 |
| Family | Solanaceae (Nightshade) | SEINet Reference |
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| Description |
Life zones and habitat: Plains and foothills (3500 to 8500 ft.); various soil types, including dry, rocky soils; waste areas, overgrazed pastures and along roadsides. Plant: Erect annual up to 28 inches tall, single or a few much-branched hairy stems with long yellow sharp spines. Leaves: Alternate, blades elliptic to broadly ovate in outline, 1-1/2 to 6 inches long; irregularly pinnately-lobed or twice pinnatifid to pinnatisect near the base; prickly along main veins. Inflorescence: Terminal, or arising from leaf axils, racemes with a few bright yellow flowers 3/4 to 1-inch across with 5 widely spreading petals or lobes and protruding anthers. Fruit: Spiny berries (burs). Bloom Period: April to November. References: "Flora of Colorado" by Jennifer Ackerfield, "Wildflowers of the Texas Hill Country" by Marshall Enquist and "Wildflowers of Texas" by Geyata Ajilvgsi. |
BONAP Distribution Map Map Color Key |
Colorado Status: Native |
© Tom Lebsack 2024
Banner photo: Castilleja rhexifolia and a brewing storm over the San Juan Mountains