Spiranthes tuberosa

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Spiranthes tuberosa
Spiranthes tuberosa AFP.jpg
Photo by Michael Drummond hosted at Atlas of Florida Plants
Scientific classification
Kingdom: Plantae
Division: Magnoliophyta - Flowering plants
Class: Liliopsida - Moncots
Order: Orchidales
Family: Orchidaceae
Genus: Spiranthes
Species: S. tuberosa
Binomial name
Spiranthes tuberosa
Natural range of Spiranthes tuberosa from USDA NRCS Plants Database.

Common Name(s): little ladies’-tresses, little pearl-twist[1]

Taxonomic Notes

Synonym(s): Spiranthes grayi Ames; S. tuberosa var. grayi (Ames) Fernald; S. tuberosa var. tuberosa; Ibidium beckii (Lindley) House - misapplied


Spiranthes tuberosa is a monoecious perennial forb/herb.[2]


This species occurs in eastern portions of Kansas, Oklahoma, and Texas, eastward to Florida, northward to New York and Massachusetts, and inland to Michigan, Illinois, Indiana, and Missouri.[2]



S. tuberosa can be found in well-drained woodlands and fields, sandhills, dry hammocks, and dry pine flatwoods.[1]


S. tuberosa has been observed flowering from June through September.[1] However, other sources report flowering occurring in April through June and also in December. [3] Flowers are white. [4]

Conservation and Management

Cultivation and restoration

Photo Gallery

References and notes

  1. 1.0 1.1 1.2 Weakley A. S.(2015). Flora of the Southern and Mid-Atlantic States. Chapel Hill, NC: University of North Carolina Herbarium.
  2. 2.0 2.1 USDA, NRCS. (2016). The PLANTS Database (http://plants.usda.gov, 10 January 2018). National Plant Data Team, Greensboro, NC 27401-4901 USA.
  3. Nelson, G. PanFlora: Plant data for the eastern United States with emphasis on the Southeastern Coastal Plains, Florida, and the Florida Panhandle. www.gilnelson.com/PanFlora/ Accessed: 10 JAN 2018
  4. Plant database: Spiranthes tuberosa. (10 January 2018).Lady Bird Johnson Wildflower Center. URL: https://www.wildflower.org/plants/result.php?id_plant=SPTU