Polanisia dodecandra

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Scientific Name Polanisia dodecandra ssp. trachysperma USDA PLANTS Symbol
Common Name Redwhisker Clammyweed ITIS Taxonomic Serial No.
Family Cleomaceae (Cleome) SEINet
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Description Life zones and habitat: Palins and foothills (3500 to 6800 ft.); sandy or gravelly soils; disturbed areas, open areas, roadsides, streambanks.
Plant: Upright slender or bushy annual 1 to 3 feet tall, much-branched; covered with sticky, glandular hairs.
Leaves: Trifoliate with oblanceolate to lanceolate-elliptic leaflets; becoming single, petiolate, along stems near the flower head; 3/8 to 1-5/8 inches long.
Inflorescence: Dense racemes 2 to 8 inches across of 15 to 30 flowers with 4 white (sometimes purpleish-tinged) petals up to 3/8-inch long; 6 to 20 pink to purple stamens, 3/8 to 1-1/4 inches long, much longer than the petals.
Fruit: Erect capsules 1 to 3 inches long with dull reddish to dark brown seeds inside.
Bloom Period: July to October.
References: "Flora of Colorado" by Jennifer Ackerfield, "Wildflowers of the Texas Hill Country" by Marshall Enquist, "Manual of the Vascular Plants of Texas" by Correll and Johnston and SEINet.
BONAP Distribution Map

Colorado Status:

© Tom Lebsack 2021