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manyspike flatsedge

Scientific Name: Cyperus polystachyos

Family: Cyperaceae

Category: Monocot

Growth: Graminoid

Duration: Annual, Perennial

Other Names: NJ (coast flat sedge), PA (many-spiked flatsedge)

       

Manyspike Flatsedge (Cyperus polystachyos)

Cyperus polystachyos, commonly known as Manyspike Flatsedge, is a herbaceous species belonging to the Cyperaceae (Sedge) family.

Considerations for Pets

  • This plant produces seeds, and contact with seeds may present a choking hazard for pets.

Taxonomy and Nomenclature

  • Scientific Name: Cyperus polystachyos Rottb.
  • Common Names: Manyspike Flatsedge, Bunchy Sedge, Field Sedge
  • Family: Cyperaceae (Sedge family)
  • Synonyms: Pycreus polystachyos (Rottboll) P. Beauvois
  • Subspecies/Varieties:
    • Cyperus polystachyos Rottb. var. polystachyos
    • Cyperus polystachyos var. paniculatus (Rottb.) C.B. Clarke
    • Cyperus polystachyos var. leptostachyus Boeckeler

Distribution and Habitat

  • This plant is found in various regions, including Hawaii.
  • It is also found in Africa, South and East Asia, Australia, and from Eastern North America to Southern South America, and is introduced elsewhere.
  • It can be found in ditches, roadsides, and cultivated areas.

Morphological Characteristics

  • Manyspike Flatsedge is a graminoid (grass-like) plant.
  • It can be either an annual or perennial tufted sedge.

Ecological Role

  • The plant's seeds are dispersed by water and soil.

Other Characteristics

  • Bloom period: Mid-summer
  • Flower color: Green
  • Drought tolerance: Low
  • Leaf type: Deciduous

Further Information

  • Discover Life provides information about the biology, natural history, ecology, identification, and distribution of Cyperus polystachyos.
  • The USDA-NRCS PLANTS Database also contains information.