Cyperus echinatus (L.) Alph.Wood
  • Class-book Bot.
  • Teasel sedge


Cite taxon page as 'WFO (2021): Cyperus echinatus (L.) Alph.Wood. Published on the Internet;http://www.worldfloraonline.org/taxon/wfo-0000372350. Accessed on: 02 Dec 2021'

General Information

Herbs, perennial, single-stemmed to loosely cespitose. Culms basally cormlike, trigonous, (15–)30–100 cm × 0.5–3.5 mm, glabrous. Leaves flat to V-shaped, 10–65 cm × 3–9 mm, adaxial surface, margins minutely scabridulous. Inflorescences: spikes densely globose to globose-ovoid, 8–17 mm wide; rays 3–12, 2–12 cm, scaberous adaxially especially distally; rachis 4–8 mm; bracts (3–)4–7, ascending at 30(–45)°, flat, 5–35 cm × 2–9 mm; rachilla persistent, wings 0.5–0.7 mm wide. Spikelets 50–100, oblong-lanceoloid, ± terete-quadrangular, (3.5–)4–7 × 1–1.4 mm; distal spikelet spreading or ascending; floral scales persistent, 3–5, appressed, stramineous to brownish, 4-ribbed laterally, oblong-elliptic, 3.5–4.5 × 1–1.8 mm, membranous, apex entire or emarginate with mucro to 0.3 mm. Flowers: anthers 0.4–0.8 mm; styles 0.5–0.6 mm; stigmas 1 mm. Achenes brown, ± stipitate, oblong, (1.5–)1.8–2.3 × 0.5–0.6(–0.7) mm (1/2 length of floral scales), apex obtuse, surfaces puncticulate.

  • Provided by: [B].Flora of North America @ efloras.org
    • Source: [
    • 1
    • ]. 

    "Perennial; stems 3–10 dm, smooth; lvs flat, 3–8 mm wide; bracts 4–7, the lowest much elongate and surpassing the infl; infl with 1 or 2 sessile terminal spikes and usually 2–10 ascending rays to 10 cm; spikes globose, 8–15 mm thick; spikelets very numerous, closely packed and radiating in all directions, 3–7.5 mm, 1–3-fld; scales oblong-elliptic, obtuse, multinerved, the lower 3.5–4.2 × 1.5–2 mm; achenes trigonous, 1.8–2.2 mm, a third as thick. Dry woods and fields; sc. Conn. and s. N.Y. to s. O., Ill., and e. Kan., s. to n. Fla. and ne. Mex. (C. ovularis)"

  • Provided by: [C].New York Botanical Garden
    • Source: [
    • 2
    • ]. 

    Other Local Names

    NameLanguageCountry
    Teasel sedge

      Bibliography

     Information From

    Cyperaceae
    • A CC0 1.0 Universal (CC0 1.0).
    Flora of North America @ efloras.org
    http://www.efloras.org/flora_page.aspx?flora_id=1
    'Flora of North America @ eFloras (2008). Published on the Internet http://www.efloras.org/flora_page.aspx?flora_id=1 [accessed August 2016]' Missouri Botanical Garden, St. Louis, MO & Harvard University Herbaria, Cambridge, MA.
    • B Flora of North America Association
    New York Botanical Garden
    Descriptions of plants should be attributed to the full citation for each individual article, chapter or book that is the source for each record, which should include the authors of original publication.
    • C Content licensed under Creative Commons Attribution-NonCommercial-ShareAlike 3.0 Unported License
    World Flora Online consortium
    http://www.worldfloraonline.org/organisation/WFO
    World Flora Online Data. 2018.
    • D CC0 1.0 Universal (CC0 1.0).