Eleocharis macrostachya

Eleocharis macrostachya is a species of spikesedge known by the common name pale spikerush.

Eleocharis macrostachya
Scientific classification
Kingdom: Plantae
Clade: Tracheophytes
Clade: Angiosperms
Clade: Monocots
Clade: Commelinids
Order: Poales
Family: Cyperaceae
Genus: Eleocharis
Species:
E. macrostachya
Binomial name
Eleocharis macrostachya
Synonyms[1]
  • Eleocharis perlonga Fernald & Brackett
  • Eleocharis xyridiformisFernald & Brackett

It is widely distributed in North America and occurs in parts of South America.[1][2] It is a plant of varied moist habitats, including freshwater lakes and brackish marshes and ponds, ditches, vernal pools, and wet meadows.

Description

Eleocharis macrostachya is a rhizomatous perennial generally reaching heights between one half and one meter. It has bright green erect stems and straw-colored basal leaves. The top of each stem is occupied by a narrow, lance-shaped or cylindrical inflorescence. The spikelet is one or two centimeters long and has at least ten flowers, each covered with a purplish-brown bract. The fruit is a yellow or yellow-brown achene with a whitish cone-shaped tubercle on one end, measuring one or two millimeters long.[3]

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References
  1. Kew World Checklist of Selected Plant Families
  2. "Eleocharis macrostachya". Germplasm Resources Information Network (GRIN). Agricultural Research Service (ARS), United States Department of Agriculture (USDA). Retrieved 2013-01-22.
  3. Flora of North America, Eleocharis macrostachya Britton in J. K. Small, Fl. S.E. U.S. 184, 1327. 1903.


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