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Clammy-Weed (Polanisia dodecandra)

Clammy-Weed

Polanisia dodecandra

Order:  Brassicales,  Family:  Capparaceae (Caper Family)

(Kansas: Kingman County. Gerber Reserve 37° 40.860’ N  -97° 57.186’ W. Bank of sandy river bed.)

Polanisia dodecandra community.  Photo by: Emily Anderson, 2012

Polanisia dodecandra focal plant.  Photo by: Emily Anderson, 2012

Diagnosis:

Height: 8 to 32 inches

Stems: Erect, greatly-branched and generally single, clammy to hairy

Leaves: Palmate 3-foliolate alternate and stalked. Leaflets are oblanceolate that are .75 to 1.75 inches in length and .25 to .75 in width with sticky hairs; the top leaves are condensed.

Inflorescence: Terminal and short racemes

Flowers: Long stalks, up to 1/2 an inch in length, 4 purplish, lanceolate sepals, 4 white or purple-tinged, obovate to spatulate petals 1/3 to 2/3 inches in length usually with notched tips, projecting past the petals are 10 to 20 pink to purplish stamens with thread-like filaments that are 1/2 inch to 1.25 inches in length.

Fruits: Numerous reddish brown seeds, 1 to 3 inche long cylindric capsules.

Flowering Period: May to October

Habitiat: Prefers disturbed sites, banks of stream, roadsides/railroads, sandy/soily soils, waste areas and bluffs.

Etymology: The common name "Clammy" referes to the glandular, clammy hairs that cover the plant.

Conservation Status: Not currently threatened

Native Status: Native to the United States

Distribution:  Found throughout the state of Kansas

 

Distribution of Polanisia dodecandra in the United States.  From the USDA Plants Database. http://plants.usda.gov/java/profile?symbol=podo3

 

Visitors: Primarily visited by bees, flies and other flying insects.


Links:

University of Texas at Austin: http://www.wildflower.org/plants/result.php?id_plant=PODO3

Illinois Wildflowers: http://www.illinoiswildflowers.info/prairie/plantx/lf_clammyweedx.htm

Wikipedia: http://en.wikipedia.org/wiki/Polanisia_dodecandra 


References:

 Elpel, Thomas J. 2004. Botany In a Day: The Pattern Method of Plant Identification. 
            HOPS Press, Pony, Montana. 85.
 The Plants Database. 2000.  National Plant Data Center. 26 July 2012. 
            http://plants.usda.gov/java/profile?symbol=podo3
 Kansas Wildflowers. 2007. Kansas State University Libraries. 26 July 2012.  
            http://www.kswildflower.org/flower_details.php?flowerID=138


 Image Credits:

Polanisia dodecandra community in the field. Photo by Emily Anderson, 2012

Polanisia dodecandra focal plant in the field. Photo by Emily Anderson, 2012

Polanisia dodecandra stem. Photo by Emily Anderson, 2012

Polanisia dodecandra leaf. Photo by Emily Anderson, 2012

Polanisia dodecandra inflorescence. Photo by Emily Anderson, 2012

Polanisia dodecandra flowers. Photo by Emily Anderson, 2012

United States Distribution Map from the USDA Plants Database. http://plants.usda.gov/java/profile?symbol=podo3


Submitted by: Emily Anderson, July, 2012.

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