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tuberous grasspink

Scientific Name: Calopogon tuberosus

Family: Orchidaceae

Category: Monocot

Growth: Forb/herb

Duration: Perennial

Other Names: IL (grass pink orchid), KY (grass-pink), MD (grass

       

Calopogon tuberosus - Tuberous Grasspink

Calopogon tuberosus, commonly known as the tuberous grasspink or grass pink orchid, is a captivating orchid native to eastern North America. Its beauty and unique characteristics make it a fascinating subject for plant enthusiasts.

Considerations for Pets

  • The plant grows from a tuberous corm.
  • It has long, narrow, grass-like leaves.

Nomenclature and Taxonomy

  • Scientific Name: Calopogon tuberosus (L.) Britton, Sterns & Poggenb.
  • Common Names: Tuberous grasspink, Grass pink, Common Grass Pink, Rose Wings
  • Family: Orchidaceae (Orchid family)
  • Kingdom: Plantae
  • Taxonomic Rank: Species
  • Synonyms: Calopogon pulchellus (Syn: tuberosus)
  • Subspecies: Two accepted subspecies include the Simpson's pink orchid and Calopogon tuberosus var. tuberosus.

Distribution and Habitat

  • Native to eastern North America.
  • In the United States, it ranges from as far southwest as Texas and Oklahoma, southeast to the Florida Everglades.
  • Historically found statewide in Maryland, but now found in only a few locations on Maryland's Eastern Shore.
  • Rare in Cape May County, found in sphagnum bogs and abandoned cranberry bogs.
  • Also found in Minnesota.
  • Frequently found in burned flatwoods, such as those in Francis Marion National Forest, Berkeley County, South Carolina.

Morphological Characteristics

  • Known as grass pink due to its long, narrow, grass-like leaves.
  • Typically grows to a height of 2 1/2 to 4 feet.
  • Produces a raceme of up to 12 irregular, 1 to 1-inch, 6-parted flowers.
  • Flowers range in color from pale to deep pink.
  • The specific epithet tuberosus refers to the tuberous corm of the species.

Similar Species

  • Can be differentiated from Calopogon barbatus (Bearded grasspink) by the location of the widest point of its petals.
  • Calopogon tuberosus leaves are wider than 0.2 inches (3/8 inch).

Quirky Facts

  • Calopogon tuberosus has the broadest range of any of the five species in the grass-pink genus (Calopogon).
  • A rare albino form of the grass pink orchid exists.

Further Information

  • USF Herbarium
  • Encyclopedia of Life
  • Discover Life
  • Idaho Fish and Wildlife Information System