Ambrosia psilostachya

Click on the images below to see larger versions.

Scientific Name Ambrosia psilostachya USDA PLANTS Symbol
Common Name Cuman Ragweed, Perennial Ragweed ITIS Taxonomic Serial No.
Family Asteraceae (Sunflower) SEINet Reference
Click Here
Description Habitat: Roadsides, disturbed areas. Widespread and abundant in much of Texas and elsewhere.
Plant: Erect perennial 4 to 24 inches tall, sometimes taller; branching, hairy stem.
Leaves: Hairy, up to 4 inches long, variable shape from lanceolate to nearly oval, divided into many narrow, pointed lobes.
Inflorescence: Composite flowers arranged in spikes atop the stems, and composed of many downward-pointing staminate (male) flower heads, yellow; pistillate (female) heads located below and in the axils of leaves.
Bloom Period: Late summer and fall.
References: SEINet and Wikipedia.
Texas Status

© Tom Lebsack 2019