Cyperus cyperoides (L.) Kuntze
  • Revis. Gen. Pl.


Cite taxon page as 'WFO (2020): Cyperus cyperoides (L.) Kuntze. Published on the Internet;http://www.worldfloraonline.org/taxon/wfo-0000370984. Accessed on: 31 Oct 2020'

General Information

Perennials. Rhizomes short, hardened. Culms laxly tufted, 10-60 cm tall, acutely triquetrous, smooth, base swollen and with more leaves. Leaves shorter than to equaling culm; sheath brown to reddish brown; leaf blade 3-6(-8) mm wide, folded at basal part but apically gradually flattened, margin not scabrous. Involucral bracts 5-8, obliquely spreading, leaflike, longer than inflorescence. Inflorescence a simple or subcompound anthela; rays several, 6-12 or sometimes more, short or 6-14 cm, unequal in length, each with 1-5 spikes. Spikes cylindric, 1-2.5[-5] cm × 5-10 mm or sometimes narrower, with many dense spikelets. Spikelets narrowly linear-ovoid, 3-7 × ca. 0.7 mm or sometimes shorter, spreading to reflexed, each (1 or)2- or 3-flowered; rachilla wings white, lanceolate, broad, hyaline. Glumes yellow, yellowish green, or greenish, oblong, ca. 3 mm, veins several with middle 3 green and conspicuous, margin involute, apex obtuse and not mucronate. Stamens 3; anthers broadly linear, 0.8-1 mm; connective prominent beyond anthers. Style short; stigmas 3, slender. Nutlet straw-colored at first but dark brown when mature, narrowly oblong, 1.8-2.2 × ca. 0.5 mm, ca. 2/3 as long as subtending glume, 3-sided, minutely punctate. Fl. and fr. Apr-Dec. 2n = 82, 88, 134, 220, 224.

  • Provided by: [B].Flora Of CHina @ efloras.org
    • Source: [
    • 1
    • ]. 

    Synonyms

     Information From

    Cyperaceae
    • A CC0 1.0 Universal (CC0 1.0).
    Flora Of CHina @ efloras.org
    http://www.efloras.org/flora_page.aspx?flora_id=2
    'Flora of China @ eFloras (2008). Published on the Internet http://www.efloras.org/flora_page.aspx?flora_id=2 [accessed August 2016]' Missouri Botanical Garden, St. Louis, MO & Harvard University Herbaria, Cambridge, MA.
    • B Missouri Botanical Garden
    World Flora Online consortium
    http://www.worldfloraonline.org/organisation/WFO
    World Flora Online Data. 2018.
    • C CC0 1.0 Universal (CC0 1.0).