Polanisia dodecandra



 Polanisia dodecandra, Reimer’s Ranch Park, Travis Co. 00371


 Polanisia dodecandra, Reimer’s Ranch Park, Travis Co. 00378


 Polanisia dodecandra, Reimer’s Ranch Park, Travis Co. 00374

Scientific Name Polanisia dodecandra USDA PLANTS Symbol PODO3
Common Name Clammyweed, Redwhisker Clammyweed ITIS Taxonomic Serial No. 22652
Family Cleomaceae (Cleome) SEINet
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Description Habitat: 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 obovate or broadly 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 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: May to June.
References: "Wildflowers of the Texas Hill Country" by Marshall Enquist, "Manual of the Vascular Plants of Texas" by Correll and Johnston and SEINet.
Note: Appears similar to the less common Polanisia uniglandulosa. P. dodecandra has smaller flowers and fewer but longer stamens, and the seeds are not shiny.
BONAP Distribution Map

Map Color Key
Texas Status:

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

© Tom Lebsack 2024