Cyperus bipartitus

{{Short description|Species of plant in Cyperaceae family endemic to North America}}

{{speciesbox

|name = Slender flatsedge

|image = Cyperusbipartitus.jpg

|status =

|status_system =

|genus = Cyperus

|species = bipartitus

|authority = Torr.

|synonyms =

  • Cyperus rivularis
  • Pycreus rivularis
  • Cyperus niger var. rivularis{{cite web|title=Cyperus bipartitus Torrey slender flatsedge|url=http://www.calflora.org/cgi-bin/species_query.cgi?where-taxon=Cyperus+bipartitus|work=Calflora|accessdate=12 January 2014}}

}}

Cyperus bipartitus, commonly known as slender flatsedge, river cyperus, or the shining flatsedge, is a common species of sedge. The name "slender flatsedge" also applies to Cyperus gracilis.

Distribution and habitat

C. bipartitus is native to the Americas, where it is found widely distributed from north to south in wet environments, such as lakes, sandbars, and ditches from elevations of {{convert|30|m|ft}} to {{convert|1140|m|ft}}.[http://ucjeps.berkeley.edu/cgi-bin/get_JM_treatment.pl?7928,8084,8086 Jepson Manual Treatment]

Description

This is a small annual plant with fibrous roots and thin stems rarely exceeding about {{convert|25|cm|in}} in height. There may be a one to three thin, short leaves around the base of the plant. The inflorescence is one to two centimeters long and holds several flat spikelets. These may be surrounded by long, leaflike bracts. Each spikelet contains flowers covered by dark reddish brown bracts. The achene fruit is a black disc about a millimeter wide.[http://plants.usda.gov/java/profile?symbol=CYBI6 USDA Plants Profile][http://www.efloras.org/florataxon.aspx?flora_id=1&taxon_id=242357642 Flora of North America]

References

{{Reflist}}