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Illinois Bundleflower

Illinois Bundleflower
Desmanthus illinoensis
(Order Fabales; Family Mimosaceae)


Illinois Bundleflower showing seeds. Photo by Amy Coffman, July 2011.
 

Diagnosis:  Illinois bundleflower is a perennial plant usually 0.3 - 1.0 meters tall.  Stems can be smooth or slightly hairy.  The leaves occur in an alternate, twice-pinnately compound pattern.  Pinnae are 2-4 cm long with 6-15 pairs.  Leaflets are 3-5 mm long with 20-30 pairs.  The leaflets are also touch-sensitive and will fold together when handled. Inflorescences on the bundleflower are 2-8 cm long and appear as a dense, globular head originating from the axils of the upper leaves.  Small, whitish flowers are produced July through August.  Fruit is developed as a curved pod occurring in dense clusters.  The pods are 1-2.5 cm long and contain 2-6 seeds per pod.


Illinois bundleflower flower (left; http://farm4.static.flickr.com/3622/3677304746_8e94d84f71.jpg).  Characteristic Bundleflower seeds (right; http://www.google.com/imgres?q=illinois+bundleflower&um=1&hl=en&sa=N&biw=1024&bih=575&tbm=isch&tbnid=F-5SOTzRIpFalM:&imgrefurl=http://www.wildflower.org/gallery/result.php%253Fid_image%253D14432&docid=64oek8V0pD-VUM&w=640&h=480&ei=OFIxTrerBfOmsAKK25zhCg&zoom=1&iact=hc&vpx=149&vpy=162&dur=302&hovh=193&hovw=258&tx=72&ty=56&page=2&tbnh=120&tbnw=172&start=17&ndsp=15&ved=1t:429,r:10,s:17)


Flowering period: May through July.
 

Distribution: Illinois bundleflower is distributed from North Dakota and Minnesota, to New Mexico and Colorado, and from Texas to Florida. It is distributed broadly in Kansas. 

Distribution map. http://plants.usda.gov/java/profile?symbol=DEIL


Habitat:  Occurs in prairies and open sandy sites, often near bodies of water.


Native status: Native to U.S.


Conservation status: Not endangered.


References:
Barkley, T.M. 1983. Field Guide to the Common Weeds of Kansas. University Press of Kansas, Lawrence, KS.
Haddock, M.J. 2005. Wildflowers and Grasses of Kansas. University Press of Kansas, Lawrence, KS.


Image credits:
Illinois bundleflower. Photo by Amy Coffman, July 2011.
Bundleflower seeds: http://www.google.com/imgres?q=illinois+bundleflower&um=1&hl=en&sa=N&biw=1024&bih=575&tbm=isch&tbnid=F-5SOTzRIpFalM:&imgrefurl=http://www.wildflower.org/gallery/result.php%253Fid_image%253D14432&docid=64oek8V0pD-VUM&w=640&h=480&ei=OFIxTrerBfOmsAKK25zhCg&zoom=1&iact=hc&vpx=149&vpy=162&dur=302&hovh=193&hovw=258&tx=72&ty=56&page=2&tbnh=120&tbnw=172&start=17&ndsp=15&ved=1t:429,r:10,s:17
Distribution map: http://plants.usda.gov/java/profile?symbol=DEIL
Illinois bundleflower flower: http://farm4.static.flickr.com/3622/3677304746_8e94d84f71.jpg


Submitted by: Amy Coffman, July 2011.

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