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Plants of the Eloise Butler Wildflower Garden

Common
Name

Scientific
Name

Plant
Family

Garden
Location

Prime
Season

Minnesota Dwarf Trout Lily
Erythronium propullans A. Gray
Lily (Liliaceae)
Woodland
Early Spring
Other names and notes

(Minnesota Fawn lily). A native perennial ephemeral of the early spring woods, this is the least seen of the three Minnesota species of trout lily (or Dog-tooth Violet as they are also known). Leaves: This species has lanceolate leaves, up to 5" long. Like the other trout lilies, the leaves are mottled green with some brownish overtones and all are basal. Non-flowering plants have one leaf and flowering plants usually have two. Flowers: The flower stalk (a scape - an above ground extension of the underground stem) arises between the basal leaves The stalk can be 1-1/2 to 5" high. Each flowering plant has a single flower with 4 to 6 petal-like tepals (although 5 is normal) that are usually more pale pink than white, and only about 1/3" long. The tepals can strongly reflex. The flower has from 2 to 6 stamens with white filaments, yellow anthers, yellow pollen and a white un-lobed style. Many plants in a grouping will flower annually. Seed: This species rarely produces a seed capsule and when it does it is usually the result of a cross with the White Trout Lily (E. albidum).

Habitat: The most common habitat for this plant is a wooded floodplain or north facing slopes that are moist. Spring dappled sunlight is desired but shape from the over-story must be provided in summer. It propagates from an offshoot from the stem just below ground level from which a single bulblet is to be produced. Comparison: E. propullans' close relative is the White Trout Lily, E. albidum, for which it is easily mistaken when not in flower. The distinguishing differences are: E. albidum has longer and wider leaves and larger flowers with 6 tepals; you will see mostly leaves and only a few flowers because that species has a very low annual flowering rate; and finally E. albidum produces 1 to 3 bulblets from an offshoot below the current bulblet. These two plants, when in close proximity, tend to hybridize and the resulting plants generally look like E. albidum. Plants die back in early summer.

Minnesota Dwarf Trout Lily Minnesota Dwarf Trout Lily
Above: The flower of MN Dwarf Trout Lily, only 1/3" long; stamens have yellow anthers and there is a single style.
Below: For comparison- the White trout lily on the right has larger flowers and leaves and also has 6 petal-like tepals. The Dwarf Trout Lily on the left is much smaller. That is a historical photo from a Kodachrome taken in the Garden by Martha Crone on April 27th, 1952. Photo courtesy Minnesota Historical Society, Martha Crone Collection.
Minnesota Dwarf Trout Lily White Trout Lily
 
Below: A historical photo of the Minnesota Dwarf Trout Lily, from a Kodachrome taken in the Garden by Martha Crone on April 25, 1955. Photo courtesy Minnesota Historical Society, Martha Crone Collection.
MN Dwarf Trout Lily
 
 

Notes: This plant is quite rare and was first identified in 1871 when Faribault teacher Mary Hodges sent a collected example to Professor Asa Gray at Harvard. He determined it was a previously un-recorded species and gave it the botanical name it has and presented a specimen of the plant to the Kew Herbarium in London the same year. The Minnesota's vascular plant list has identified only three counties in Minnesota where the plant has been collected - Goodhue, Rice and Steel.

Eloise Butler first recorded planting this plant on May 17, 1909 in the north end of the bog. She obtained specimens from a source near Cannon Falls which is in Goodhue County and remarked in her log - "Poor material, probably will not grow." Well, grow they did and the plants have been in the marsh area of the Woodland Garden ever since. The plant was listed on Martha Crone's 1951 Garden Census and on all the subsequent census of Garden plants.

Endangered: Minnesota Dwarf Trout Lily is currently listed on the Minnesota DNR list of endangered species. It is also the only Minnesota plant species on the Federal endangered list. There is also a good introduced representation at the Minnesota Landscape Arboretum.

 
 

 
References: Plant characteristics are generally from sources 32, W2, W3, W7 & W8 plus others as specifically applies. Distribution principally from Wi, W2 and 28C. Planting history generally from 1, 4 & 4a. Other sources by specific reference. See Reference List for details.  
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