Minnesota Wildflowers


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Polygonatum biflorum (Smooth Solomon's Seal)

Plant Info
Also known as: Giant Solomon's Seal
Genus:Polygonatum
Family:Ruscaceae (Butcher's Broom)
Life cycle:perennial
Origin:native
Habitat:part shade, shade; woods
Bloom season:May - July
Plant height:1 to 3 feet
County distribution (click map to enlarge):Minnesota county distribution map
Spotted in Ramsey County at:

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Detailed Information

Flower: 6-petals bell raceme

[photo of flowers] Flowers are in groups of 2 to 10 on stalks that sprout from the leaf axils. Each bell-shaped flower is ½ to 1 inch long and pale yellowish green with 6 short, slightly flaring lobes. The flowers are usually hidden under the leaves and may go unseen.

Leaves and stem: alternate simple

[photo of leaves] Leaves are oval, toothless and hairless, 2 to 6 inches long and up to 3 inches wide with a pointed tip. The base of the leaf clasps the stem. Each leaf has several prominent parallel veins. The plant does not grow upright, but arcs as if top-heavy, and the hairless stem zig-zags some between the alternately attached leaves.

Fruit:

[photo of fruit] Each flower is replaced by a ¼ inch berry that ripens from green to blue-black in late summer.

Notes:

Just looking at the leaves, Smooth Solomon's Seal, False Solomon's Seal, and Starry False Solomon's Seal are all similar. Starry False Solomon's Seal prefers sunnier habitats and its leaves are more narrow and often fold up some lengthwise. The leaves of False Solomon's Seal do not clasp the stem. Both False Solomon's Seal and Starry False Solomon's Seal have a flower cluster at the top of the plant. Another similar species is Hairy Solomon's Seal (Polygonatum pubescens), which is mostly erect, has flowers not more than ½ inch long, and leaves that are hairy on the underside. Formerly in the Liliaceae (Lily) family, the Polygonatum species have been reassigned to Ruscaceae (Butcher's Broom).

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Map of native plant purveyors in the upper midwest

More photos

Photos by K. Chayka taken at Long Lake Regional Park, Ramsey County.

Comments

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

Posted by: CarolAnn H
on: 2009-07-13 07:08:28

I have oodles of this plant in my backyard in Burnsville. I was initially removing it but I'm delighted to find out it's a native since it appears to be popping up all over my woodland garden area.

Posted by: Julie in Forestville/Mystery Cave State Park
on: 2010-05-14 10:46:21

I lead an annual Mother's Day Wildflower Walk at Forestville State Park. I include Solomon's Seal every year. We usually see about 20-25 different wildflowers on the walk.

Posted by: Lexi in Sherburne County
on: 2011-06-23 13:15:29

I found bunches of these under some bushes in my yard. The ones I found are more green than the ones in the picture above.

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