Minnesota Wildflowers


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Lotus purshianus (American Bird's-foot Trefoil)

Plant Info
Also known as: Prairie Bird's-foot Trefoil
Genus:Lotus
Family:Fabaceae (Pea)
Life cycle:annual
Origin:native
Habitat:sun; prairies, along roads and railroads
Bloom season:June - September
Plant height:6 to 20 inches
County distribution (click map to enlarge):Minnesota county distribution map
Spotted in Ramsey County at:

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Detailed Information

Flower: irregular

[photo of flowers] A single flower is at the end of a hairy stalk that arises from a leaf axil. Flowers are 1/8 to ¼ inch long, white or yellowish white and a typical shape for a member of the Pea family. Behind the flower are long narrow bracts covered in long white hairs. One plant has many flowers, on branching stems.

Leaves and stem: alternate compound

[photo of leaves] Leaves are mostly compound in groups of 3, alternately attached with little or no leaf stalk. A single simple leaf is also attached to the flower stalk, just below the bracts. Leaflets are up to ¾ inch long and ¼ inch wide, toothless, hairy, with a pointed tip and tapering or rounded at the base. The main stem is densely covered in fine hairs.

Fruit:

[photo of fruit] Fruit is a slender bean-like pod, about 1 inch long.

Notes:

This plant also goes by the synomym Lotus unifoliolatus. It is not very widespread in Minnesota and not found in any of my field guides, so it was a bit of a challenge to identify. It was a surprise find, too, since there was no record of it in the Twin Cities area until now.

Where to buy native seed and plants

Help support this site by buying seeds & plants from these vendors. Tell them we sent you!

  • Shooting Star Native Seeds - Native Prairie Grass and Wildflower Seeds
  • Prairie Restorations - Bringing people together with the land
  • Shop for native seeds and plants at PrairieMoon.com!
  • Out Back Nursery and Landscaping - Where Ecology and Horticulture Unite

Map of native plant purveyors in the upper midwest

More photos

Photos taken at Rice Creek Trail Corridor, Shoreview, MN

Comments

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