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Polanisia dodecandra ssp. trachysperma (Clammy-weed)
Marcus, Joseph A.

Polanisia dodecandra ssp. trachysperma

Polanisia dodecandra (L.) DC. ssp. trachysperma (Torr. & A. Gray) Iltis

Clammy-weed, Clammyweed, Sandyseed Clammyweed

Capparaceae (Caper Family)

Synonym(s): Polanisia dodecandra var. trachysperma, Polanisia trachysperma


USDA Native Status: L48 (N), CAN (N)


From the Image Gallery

40 photo(s) available in the Image Gallery

Plant Characteristics

Duration: Annual
Habit: Herb
Size Class: 1-3 ft.

Bloom Information

Bloom Color: White
Bloom Time: May , Jun , Jul


USA: AL , AR , AZ , CA , CO , CT , IA , ID , IL , IN , KS , KY , LA , MA , MD , MI , MN , MO , MT , ND , NE , NM , NV , OH , OK , OR , PA , SD , TX , UT , VA , WA , WI , WV , WY
Canada: SK
Native Habitat: Widespread in Texas, common in various soils of the Edwards Plateau and South Texas Plains. Can be found in open areas along roadsides, sandy stream banks, and disturbed areas.

Growing Conditions

Light Requirement: Sun
Conditions Comments: The flowers are white with long pink to purple stamens. This upright slender or bushy plant is covered with glandular hairs which exude a sticky liquid. The name refers to a sticky or clammy strong-smelling residue left on the hands after handling.


Conspicuous Flowers: yes
Fragrant Flowers: yes
Interesting Foliage: yes
Attracts: Butterflies
Deer Resistant: High

From the National Organizations Directory

According to the species list provided by Affiliate Organizations, this plant is on display at the following locations:

Lady Bird Johnson Wildflower Center - Austin, TX


Bibref 328 - Wildflowers of Texas (2003) Ajilvsgi, Geyata.
Bibref 286 - Wildflowers of the Texas Hill Country (1989) Enquist, M.

Search More Titles in Bibliography

Additional resources

USDA: Find Polanisia dodecandra ssp. trachysperma in USDA Plants
FNA: Find Polanisia dodecandra ssp. trachysperma in the Flora of North America (if available)
Google: Search Google for Polanisia dodecandra ssp. trachysperma


Record Modified: 2007-01-01
Research By: TWC Staff

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