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Desmanthus illinoensis (Michx.)MacMill.  
Family: Fabaceae
Illinois bundleflower
[Acuan illinoense (Michx.)Kuntze, moreMimosa illinoensis Michx.]
Desmanthus illinoensis image
Paul Rothrock  
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Vascular plants of NE US and adjacent Canada
Taprooted herb with clustered stems to 1 m or more; stipules filiform, 6-10 mm; lvs bipinnate, 5-10 cm, nearly sessile; pinnae 6-12 pairs, 2-4 cm; lfls 20-30 pairs, 1.5-3 mm, often ciliate; peduncles 2-6 cm, ascending; pet 2 mm; stamens 5; frs strongly curved or somewhat twisted together into a dense subglobose head, thin, 1-2.5 cm נ4-7 mm; seeds 3-5 mm, nearly as wide; 2n=28. Moist or dry soil, riverbanks, prairies, and pastures; O. to N.D., s. to Fla. and N.M., and occasionally intr. elsewhere. All summer. (Acuan i.)

Gleason, Henry A. & Cronquist, Arthur J. 1991. Manual of vascular plants of northeastern United States and adjacent Canada. lxxv + 910 pp.

©The New York Botanical Garden. All rights reserved. Used by permission.
Correll and Johnston 1970, Allred and Ivey 2012, Martin and Hutchins 1980
Duration: Perennial Nativity: Native Lifeform: Forb/Herb General: Perennial herb, 30-100 cm tall, from a slightly woody root crown; stems several from the crown, ascending or erect. Leaves: Alternate and pinnately twice-compound, with 6-14 pairs of primary pinnae, each of those with many tiny leaflets; leaflets linear, 2-3 mm long, with pointed (acute) tips. Entire leaf is 6-10 cm long. Flowers: Whitish and showy, in dense globose clusters at the ends of long axillary peduncles, these 3-7 cm long; flowers have 5 small sepals, 5 small petals, and 5 stamens that are much longer than the petals and sepals. Fruits: Legumes flat, crescent-moon shaped, 15-25 mm long and 5 mm wide, glabrous; clustered in dense heads at the ends of axillary peduncles; legumes split open promptly upon maturity to release several seeds. Ecology: Found along watercourses, ditches, roadsides, and in grasslands; from 3,000-6,500 ft in the Southwest; flowers June-August. Distribution: OH to SD, south to FL, TX, and NM. Notes: This erect perennial is common throughout the southern Great Plains, especially along roadsides as it prefers open, sunny locations. It is closely related to Mimosa and Acacia, and as such has bipinnately compound leaves; white, puffball-like flower clusters; and flat, brown, crescent-shaped seed pods. The seed pods are perhaps the most distinctive part of this plant, as they are in such dense rounded clusters near the tops of the stems. There are several other species of Desmanthus in the Southwest, but this is the only one with crescent-shaped seed pods; the other species have straight, linear seed pods. Ethnobotany: The roots are said to contain DMT and used with other plants to create a hallucinogenic mixture called prairie-huasca; the seeds are edible; a decoction of the leaves was used as a wash on itches. Etymology: Desmanthus translates to bundle-flower, from the Greek desme, bundle, and anthos, flower; illinoensis means of or from Illinois. Synonyms: Acuan illinoense Editor: AHazelton 2017
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Desmanthus illinoensis
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Desmanthus illinoensis image
Paul Rothrock  
Desmanthus illinoensis image
Paul Rothrock  
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