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Oahu sedge

Scientific Name: Carex wahuensis ssp. wahuensis

Family: Cyperaceae

Category: Monocot

Growth: Graminoid

Duration: Perennial

Other Names:

       

Oahu Sedge (Carex wahuensis)

Oahu sedge (Carex wahuensis) is a tough, versatile plant native to Hawaii and used as an accent plant in landscaping. It can be planted individually or in larger groups.

Considerations for Pets

  • As a grass-like plant, it may attract grazing animals.

Taxonomy and Nomenclature

  • Scientific Name: Carex wahuensis C.A. Mey.
  • Common Name: Oahu sedge
  • Family: Cyperaceae (Sedge family)
  • Kingdom: Plantae
  • Taxonomic Rank: Species; Direct Children: Subspecies
  • Synonyms: None explicitly mentioned, but the text notes "names for this taxon" may be found elsewhere.

Distribution and Habitat

  • Native to Hawaii (HI).
  • Also found in Puerto Rico (PR), Virgin Islands (VI), and Navassa Island (NAV).
  • Its naturalized presence was first recorded in Upper Kalihi Valley on Oahu.
  • Also found on Oahu, Molokai, Maui, the Big Island and Laysan in the northwestern part of Hawaii.

Morphological Characteristics and Growth Habits

  • Growth Habit: Graminoid (grass-like).
  • Duration: Perennial (lives for more than two years).
  • Can grow to more than 2 feet wide and 2.5 feet tall in clumps.
  • Medium in size and can reach 4 meters high

Ecological Role

  • Considered a good non-invasive alternative to non-native "Umbrella" plants (likely referring to plants in the Cyperus genus).

Further Information

  • Discover Life provides a page dedicated to the biology, natural history, ecology, identification, and distribution of Carex wahuensis.
  • Images are available from Forest and Kim Starr at Starr Environmental.
  • Additional information may be found at http://www.instanthawaii.com/cgi-bin/hi?Plants.
  • Wikimedia Commons hosts images of Carex wahuensis.