Polygala polygama (Racemed Milkwort)

Plant Info
Also known as: Purple Milkwort, Bitter Milkwort
Genus:Polygala
Family:Polygalaceae (Milkwort)
Life cycle:biennial
Origin:native
Habitat:part shade, sun; dry sandy soil, prairies, open meadows, open woods
Bloom season:June - August
Plant height:6 to 12 inches
Wetland Indicator Status:GP: FACU MW: FACU NCNE: FACU
MN county distribution (click map to enlarge):Minnesota county distribution map
National distribution (click map to enlarge):National distribution map

Pick an image for a larger view. See the glossary for icon descriptions.

Detailed Information

Flower: Flower shape: irregular Cluster type: raceme Cluster type: spike

[photo of flowers] Spike-like raceme, usually loosely arranged, 1 to 4+ inches (to 10+ cm) long at the tip of the stem. Flowers are short-stalked, pink to rose-purple to nearly white, about ¼ inch (4 to 6 mm) long with 2 spreading, petal-like sepals flanking 3 petals rolled into a column with a fringed crest in the center. Petal-less, self-pollinating flowers (cleistogamous) are also produced underground on short stems.

Leaves and stem: Leaf attachment: alternate Leaf type: simple

[photo of leaves] Leaves are alternate, up to about 1 inch (3 cm) long and about ¼ inch (2 to 6+ mm) wide, linear to elliptic to narrowly spatula-shaped, widest at or above the middle, toothless, hairless, blunt or pointed at the tip, tapering to a stalkless base. The lowest leaves may be significantly reduced in size. Stems are leafy, usually unbranched and multiple from the base, erect to ascending or prostrate from the base and rising up at the tip (decumbent).

Fruit: Fruit type: capsule/pod

[photo of developing fruit] Fruit is a 2-seeded capsule 2 to 4 mm long, somewhat heart-shaped, broadly elliptic or nearly round in outline. The persistent lateral sepals fold up and wrap around the capsule as it develops, the color fading to pale pink or greenish white. Seeds are up to 3 mm long, variously hairy, with a 2-lobed appendage 1/3 to ¾ as long as the seed.

Notes:

Racemed Milkwort reaches the northwest edge of its range in Minnesota and is primarily found from the Twin Cities Metro area through our southeast counties, but scattered populations are as far north as Beltrami and Lake counties. Habitats are sandy prairies, dunes, savanna and barrens. When open, the flowers are near miniatures of the larger and more showy Gaywings (Polygaloides paucifolia a.k.a. Polygala paucifolia) though flower components are proportionally different.

Native Plant Nurseries, Restoration and Landscaping Services ↓

Map of native plant resources in the upper midwest

  • Spangle Creek Labs - Native orchids, lab propagated
  • Prairie Restorations - Bringing people together with the land
  • Landscape Alternatives
  • ReWild Native Gardens
  • Out Back Nursery

More photos

Photos by K. Chayka taken in Chisago and Wabasha counties. Photos by Peter M. Dziuk in Anoka County and Isanti counties. Polygala polygama fruit photo by Keir Morse used under CC BY-NC-SA 3.0.

Comments

Have you seen this plant in Minnesota, or have any other comments about it?

Posted by: Linda - Pin Oak S & N area
on: 2015-06-21 14:50:25

Found on the open hillsides/dry prairie area at Pin Oak SNA south of Chatfield, MN

Posted by: Karen - Hastings
on: 2015-06-23 12:16:34

In bloom at the Hastings Sand Coulee SNA 6-23-15. Also occurs at Grey Cloud Dunes SNA.

Posted by: Jason Osowski - Zimmerman, MN
on: 2020-07-16 16:59:16

Present at Fremont WMA Southside prairie remnant.

Posted by: Brett W - Sherburne county
on: 2022-06-19 18:46:24

Surprised to see this popping up in the scraped topsoil part from the removal of an old farms dump site. First time recording this plant in the SE Unit!

Posted by: Ron morreim - Brainerd
on: 2024-06-28 16:27:01

Blooming in my prairie right now.

Post a comment

Note: All comments are moderated before posting to keep the spammers out. An email address is required, but will not be posted—it will only be used for information exchange between the 2 of us (if needed) and will never be given to a 3rd party without your express permission.

For info on subjects other than plant identification (gardening, invasive species control, edible plants, etc.), please check the links and invasive species pages for additional resources.



(required)




Note: Comments or information about plants outside of Minnesota and neighboring states may not be posted because I’d like to keep the focus of this web site centered on Minnesota. Thanks for your understanding.