Ambrosia monogyra [Asteraceae]

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Scientific Name Ambrosia monogyra (Hymenoclea monogyra) USDA PLANTS Symbol
Common Name Single Whorl Burro-brush ITIS Taxonomic Serial No.
Family Asteraceae (Sunflower) SEINet
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Description Habitat: Sandy desert washes and floodplains; 1,000 to 4,000 ft.
Plant: Broom-like perennial shrub, densely branched mostly above; older stems whitish to light beige; new stems light green; 2 to 6 feet tall.
Leaves: Alternate, linear or filiform, dark green, 3/4 to 2-3/4 inches long; young leaves may be pinnately divided into several segments.
Inflorescence: Clusters of flower heads borne along stems and arising from leaf axils; staminate heads more numerous than pistillate, both present in same cluster; both flowers are rayless; staminate heads have 5 to 7 flowers; pistllate heads are single-flowered with 9 to 12 spreading outer phyllaries forming a saucer shape.
Bloom Period: September and October.
References: SEINet, Southwest Desert Flora and "Manual of the Vascular Plants of Texas" by Correll and Johnston.
BONAP Distribution Map

Texas Status:

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