|Scientific Name||Vachellia rigidula (Acacia rigidula)||USDA PLANTS Symbol||VARI|
|Common Name||Blackbrush Acacia||ITIS Taxonomic Serial No.||819928|
|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
Banner photo of Lupinus ssp. by Rick Capozza, Austin TX
© Tom Lebsack 2023