Little Sweet Betsy

Scientific Name: Trillium cuneatum. The genus Trillium refers to the three leaves and three petals that are characteristic of this genus. The epithet cuneatum comes from the Latin cuneatus, meaning wedge-shaped, and refers to the leaves.⁶

Common Name: Little Sweet Betsy. Other common names include Little Sweet Trillium, Large Toadshade, and Bloody Butcher!³

Family: Trilliaceae (Trillium family). Trilliums are one of eastern North America’s best-known wildflowers, and reach their greatest diversity in the Southeastern US. Virginia is home to 9 native and 3 introduced species.

Average Height: 6-12 inches

Description: A perennial herbaceous plant with three oval leaves all arising from a short aboveground stem. These leaves are mottled in different shades of green and silver. From the center of the leaves rises a single flower. The petals are upright and variable in color, from greenish-yellow or copper to maroon or purplish-black. The stamens are packed tightly together, and are less than half the height of the sepals. The fruit is a large capsule which splits open to release the seeds. After blooming and setting seed, the aboveground portion of the plant dies back until the next spring.

Bloom time: Mar – Apr

Notes: This species is very similar to Toadshade (T. sessile), which has stamens more than half as long as its short petals. T. sessile’s foliage is also usually less dramatically patterned. T. sessile is native to rich forests and reaches its eastern range limit in Virginia and North Carolina. Yellow Trillium (T. luteum) may also be encountered in urban forests in Virginia. It has green or yellow petals and ovaries and stamens entirely yellow when the flowers are fully open (vs. at least partially dark in T. cuneatum). It is native to the Southern Appalachians, south of Virginia and is occasionally found escaped from cultivation outside its native range.⁵

Range: Rarely escaping from cultivation and becoming naturalized in Virginia, documented with voucher specimens in Albemarle, Nelson and Roanoke counties, with an unvouchered population in Henry County.⁴ Native south of Virginia, from North Carolina to Illinois and south to Mississippi and Georgia.⁵

Geology/Soil: Found over various geologic formations and soil types, typically in sandy or loamy soils of rich forests.

Habitat: Rich slope forests, floodplain forests, stream banks, occasionally in drier upland forests.³

Flora associations: Found with a wide variety of other forest herbs such as jack-in-the-pulpit (Arisaema triphyllum), wild ginger (Asarum canadense), spring beauty (Claytonia virginica), star chickweed (Stellaria pubera), mayapple (Podophyllum peltatum), and bloodroot (Sanguinaria canadensis), along with woody plants like spicebush (Lindera benzoin), witch-hazel (Hamamelis virginiana), ironwood (Carpinus caroliniana), red maple (Acer rubrum), boxelder (Acer negundo), tuliptree (Liriodendron tulipifera), northern red oak (Quercus rubra), and beech (Fagus grandifolia).

Fauna associations: Trillium cuneatum seeds have an attached nutrient-packed ‘elaiosome’–a tasty snack pack evolved to attract ants and wasps. Trillium cuneatum and two other related species (T. catesbaei and T. undulatum) are known to be dispersed by yellow jackets as well.⁷ These treats are especially attractive to winnow ants (genus Aphaenogaster), some of the most common ants in eastern deciduous forests. While winnow ants collect Trillium seeds in order to eat the elaiosomes, the ants generally don’t remove them from the seeds until they reach their nest. Once there they commonly discard the elaiosome-stripped seeds in a ‘midden’, the ant colony’s nutrient-rich waste pile, and a perfect place for seed germination.^1,2 This strategy of using ants for seed dispersal (formally known as myrmecochory) is common among many other spring ephemerals in our area, including spring beauty (Claytonia virginica), bloodroot (Sanguinaria canadensis), perfoliate bellwort (Uvularia perfoliata), and several species of violets (Viola spp.), among others.¹

Human associations: No edible or medicinal uses for Trillium cuneatum are known. Various Indigenous people use other species of Trillium for a variety of minor ailments. Trillium cuneatum is sometimes planted in wildflower gardens.

We want these plants to thrive and for everyone who gets to visit the park to enjoy them, so remember – don’t pick flowers or other parts of the plant!!

1 Clark, R. 2022. Are seed-dispersing ants elaiosome-limited? An experimental test in a Connecticut forest dominated by myrmecochorous plants. Food Webs 32 (2022)

2 In Defense of Plants. Episode 166 – Ants as Seed Dispersers a.k.a. The Myrmecochory Episode! June 24, 2018.

3 LeGrand, Harry, et al. “Vascular Plants of North Carolina.” Ncparks.gov, 2019, auth1.dpr.ncparks.gov/flora/plant_list.php.

4 Virginia Botanical Associates. “Digital Atlas of the Virginia Flora | Trillium Cuneatum Raf.” Www.vaplantatlas.org, www.vaplantatlas.org/index.php?do=plant&plant=4746&search=Search. Accessed 4 June 2024.

5 Weakley, Alan , and Southeastern Flora Team. “Flora of the Southeastern US.” Fsus.ncbg.unc.edu, 2024, fsus.ncbg.unc.edu/. Accessed 4 June 2024.

6 “Trillium Cuneatum – Plant Finder.” Www.missouribotanicalgarden.org, www.missouribotanicalgarden.org/PlantFinder/PlantFinderDetails.aspx?taxonid=281992&isprofile=1&gen=Trillium#:~:text=Genus%20name%20means%20%22triple%20lily. Accessed 28 June 2024.

7. Zettler, J. A., T. P. Spira, and A. A. Craig. 2001. Yellow Jackets (Vespula spp.) Disperse Trillium (spp.) Seeds in Eastern North America. American Midland Naturalist 146(2):444-446.

Definitions:

Spring ephemeral: A perennial plant which grows early in the spring – before the trees grow leaves – to take advantage of the sunlight reaching the forest floor. In less than 2 months, the plant grows, blooms, and produces seed and then disappears from view as the leaves die back.

Myrmecochory: The formal term used for the dispersal of seeds by ants.