Rough Flatsedge
Cyperus retrofractus (Linnaeus) Torrey
Rough Flatsedge: https://marylandbiodiversity.org/species/1990
Synonyms
Cyperus dipsaciformis 
Tags
S2 (State rare)

Map Snapshot

25 Records

GAALWAFRCLMOHOBABCHACEPGAACVCHSMKEQACNTADOWISOWO

Resources

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Citations

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Source: Wikipedia

Cyperus retrofractus
Scientific classification Edit this classification
Kingdom: Plantae
Clade: Tracheophytes
Clade: Angiosperms
Clade: Monocots
Clade: Commelinids
Order: Poales
Family: Cyperaceae
Genus: Cyperus
Species:
C. retrofractus
Binomial name
Cyperus retrofractus

Cyperus retrofractus is a species of sedge that is native to eastern parts of the United States.

Taxonomy

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Cyperus retrofractus was first described as Scirpus retrofractus by the Swedish botanist Carl Linnaeus in 1753.[2] The American botanist John Torrey moved the species to genus Cyperus in 1843.[1] Torrey referred to the species as the bent-flowered galingale.[3] As of February 2026, the botanical name Cyperus retrofractus (L.) Torr. is widely accepted.[4][5]

See also

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References

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  1. ^ a b "Cyperus retrofractus (L.) Torr.". International Plant Names Index (IPNI). Royal Botanic Gardens, Kew; Harvard University Herbaria & Libraries; Australian National Botanic Gardens. Retrieved 11 February 2026.
  2. ^ "Scirpus retrofractus L.". International Plant Names Index (IPNI). Royal Botanic Gardens, Kew; Harvard University Herbaria & Libraries; Australian National Botanic Gardens. Retrieved 11 February 2026.
  3. ^ Torrey (1843), p. 344.
  4. ^ "Cyperus retrofractus (L.) Torr.". Plants of the World Online. Royal Botanic Gardens, Kew. Retrieved 11 February 2026.
  5. ^ "Cyperus retrofractus (L.) Torr.". WFO Plant List. Retrieved 11 February 2026.

Bibliography

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