Texas Wildbuds

Brazoria arenaria

(Sand Brazoria)

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Brazoria arenaria, Aransas National Wildlife Refuge, Calhoun Co. 4928

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Brazoria arenaria, Aransas National Wildlife Refuge, Calhoun Co. 4936

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Brazoria arenaria, Aransas National Wildlife Refuge, Calhoun Co. 4940

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Brazoria arenaria, Aransas National Wildlife Refuge, Calhoun Co. 4924

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Brazoria arenaria, Aransas National Wildlife Refuge, Calhoun Co. 4930

Scientific Name Brazoria arenaria USDA PLANTS Symbol BRAR
Common Name Sand Brazoria ITIS Taxonomic Serial No. 32463
Family Lamiaceae (Mint) SEINet
Reference
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Description Habitat: Sandy soils; endemic to Rio Grande plains and coastal counties in South Texas.
Plant: Upright annual up to 16 inches high; stem branching at base with short pubescent hairs.
Leaves: Basal leaves oblong-elliptic to elliptic-oblanceolate, up to 4-3/4 inches long and 1-3/8 inches wide and on long petioles; a few stem leaves linear-oblong to oblong-lanceolate, sessile, becoming clasping, rounded tips and denticulate margins.
Inflorescence: Raceme up to 12 inches high with multiple pale pink/lavender flowers, each with two lips, upper lip with two lobes and the lower with three; floral throats are white with purple dots; calyx tube has two lips, upper with three lobes and lower with two, with short glandular and non-glandular hairs; single elliptic to ovate-elliptic leaf-like bract below each head with ciliate margin and obtuse to acute tip.
Bloom Period: March and April.
References: "Manual of the Vascular Plants of Texas" by Correll and Johnston.
Note: Previously mis-identified by me as B. truncata. Thanks to Joe Marcus at Lady Bird Johnson Widflower Center for the correction.
BONAP Distribution Map

Map Color Key
Texas Status:
Native
Endemic

Banner photo of Castilleja indivisa and Lupinus ssp. taken along FM 1323 north of Johnson City, Blanco County

© Tom Lebsack 2025