Texas Wildbuds

Aloysia macrostachya

(Rio Grande Beebrush)

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Aloysia macrostachya, Falcon State Park, Starr Co. 4116

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Aloysia macrostachya, Falcon State Park, Starr Co. 4134

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Aloysia macrostachya, Falcon State Park, Starr Co. 4145

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Aloysia macrostachya, Falcon State Park, Starr Co. 4141

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Aloysia macrostachya, Falcon State Park, Starr Co. 4119

Scientific Name Aloysia macrostachya USDA PLANTS Symbol ALMA9
Common Name Rio Grande Beebrush, Woolly Beebrush, Sweet Stem ITIS Taxonomic Serial No. 32133
Family Verbenaceae (Verbena) SEINet
Reference		 Click Here
Description Habitat: Sandy or limestone gravel soils in desert scrub.
Plant: Erect perennial up to 6 ft. tall, ofyen less, with numerous slender, erect branches; hairy younger stems.
Leaves: Opposite, ovate, 0.25 to 1.2 inches long and 0.15 to 0.8-inch wide; crenate and ciliate margins with rounded teeth; upper surfaces with prominent impressed veins; lower surfaces are densely hairy.
Inflorescence: Densely glandular-hairy terminal spikes 2 to 4-3/4 inches long rising well above the leaves with several to many small pink to lavender flowers, about 0.25-inch across; each flower with tubular corolla 0.2-inch long with 5 flared lobes and hairy throat; very hairy calyx with 5 pointed lobes.
Bloom Period: January to October.
References: "Manual of the Vascular Plants of Texas" by Correll and Johnston, SEINet and iNaturalist.		 BONAP Distribution Map

Map Color Key		 Texas Status:
Native
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Banner photo of Castilleja indivisa and Lupinus ssp. taken along FM 1323 north of Johnson City, Blanco County

© Tom Lebsack 2026

Every attempt is made to provide accurate, up-to-date, and relevant information, but the completeness or accuracy of any information presented on this website cannot be guaranteed. I use authoritative references to insure high standards of accuracy and review and update the information frequently.