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Carex lemmonii

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(Redirected from Carex albida) Species of grass-like plant

Carex lemmonii
Conservation status

Secure  (NatureServe)
Scientific classification Edit this classification
Kingdom: Plantae
Clade: Tracheophytes
Clade: Angiosperms
Clade: Monocots
Clade: Commelinids
Order: Poales
Family: Cyperaceae
Genus: Carex
Species: C. lemmonii
Binomial name
Carex lemmonii
W.Boott
Synonyms
  • Carex albida L.H. Bailey
  • Carex abramsii Mack.
  • Carex luzulifolia f. albida (L.H. Bailey) Kük.
  • Carex sonomensis Stacey

Carex lemmonii, or Lemmon's sedge, is a plant in the sedge family, and is endemic to California. Carex albida (binomial authority L.H.Bailey) is now considered a synonym, but was previously thought to be a separate species; such plants have the common name white sedge.

Description

This sedge produces a dense or loose clump of erect stems 40 to 60 centimeters tall from a network of short rhizomes. The inflorescence is a cluster of 5 to 7 spikes over 15 centimeters long. Staminate flowers are located mainly on the terminal spike, while pistillate flowers are mainly located in the lateral spikes. The fruit is covered in a sac called a perigynium, which is green with a white beak.

White sedge

White sedge is endemic to Sonoma County, California, where it is known only from one occurrence at Pitkin Marsh, a wetland between Forestville and Sebastopol. There are fewer than 1000 plants, and likely fewer than 300 according to more recent estimates. It is a federally listed endangered species.

The colonies are scattered across 5 acres (20,000 m) of a 27-acre (110,000 m) tract. As with other plants that reproduce vegetatively by cloning from their rhizomes, the number of true separate individual life forms is hard to estimate, so researchers count visible stems; a recent count revealed fewer than 300, a decrease from nearly 1000. This sedge occurs near a rare local endemic, the Pitkin Marsh lily (Lilium pardalinum ssp. pitkinense).

References

  1. "NatureServe Explorer 2.0".
  2. Zika, Peter F.; Wilson, Barbara L. (October 2012). "Carex albida (Cyperaceae), and its Relationship to Carex lemmonii". Madroño. 59 (4): 171–180. doi:10.3120/0024-9637-59.4.171. S2CID 86232290. Retrieved 1 July 2014.
  3. ^ The Nature Conservancy
  4. ^ USFWS. White sedge/Pitkin marsh lily Five-year Review. August 2009.

External links

Taxon identifiers
Carex lemmonii


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