Vachellia rigidula
(Blackbrush Acacia)
Vachellia rigidula, Seminole Canyon State Park, Val Verde Co. 6360
Vachellia rigidula, Seminole Canyon State Park, Val Verde Co. 6355
Vachellia rigidula, Seminole Canyon State Park, Val Verde Co. 6366
Vachellia rigidula, Seminole Canyon State Park, Val Verde Co. 6367
| Scientific Name | Vachellia rigidula (Acacia rigidula) | USDA PLANTS Symbol | VARI |
| Common Name | Blackbrush Acacia | ITIS Taxonomic Serial No. | 819928 |
| Family | Fabaceae (Pea) | SEINet Reference |
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| Description | Habitat: Various soils and conditions; common in South and Southwest Texas. Plant: Thicket-forming shrub or small tree 3 to 15 feet tall with multiple trunks and numerous rigid, short branches; bark whitish-grey with straight spines on most branches. Leaves: Bi-pinnate compound leaves, usually with only one pair of pinnae up to 1 inch long, and 2 to 4 pairs of leaflets 3/8 to 5/8-inch long on each; leaflets dark green, glossy and hairless, ovate with rounded tips; semi-evergreen. Inflorescence: Many aromatic, showy flower spikes arising from branch axils, each cylindrical spike about 3/8 to 1/2-inch wide and 2 to 6 times as long; each spike with many tiny radial flower cups, no petals, many white stamens with light-yellow anthers. Bloom Period: February to May. References: "Manual of the Vascular Plants of Texas" by Correll and Johnston, "Texas Wildflowers" by Campbell and Loughmiller and Wildflower Center. |
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