Opuntia triacantha (Willd.) Sweet
  • Hort. Brit.


Cite taxon page as 'WFO (2020): Opuntia triacantha (Willd.) Sweet. Published on the Internet;http://www.worldfloraonline.org/taxon/wfo-0001287154. Accessed on: 26 Nov 2020'

General Information

Shrubs, prostrate (to erect), clambering, to 0.6 m. Stem segments easily detached, green, flattened, elliptic, 5-18 × 3-7 cm, slightly tuberculate, glabrous; areoles 3-4 per diagonal row across midstem segment, subcircular, 4 mm diam.; wool whitish. Spines 1-3(-4) per areole, ± evenly distributed on stem segment, porrect to spreading, gray to whitish or cream, tipped black, straight, acicular, to 40 mm, barbed. Glochids yellow, aging brown, 4-9 mm. Flowers: inner tepals yellow throughout, 20-25 mm; filaments pale green to yellow; anthers yellow; style pale green or white, pink tinged; stigma lobes color unknown. Fruits red, ovoid to obovoid, 25-30 × 15-20 mm, fleshy, glabrous, bearing few areoles, spineless. Seeds tan, subcircular, somewhat flattened, 2.5 mm diam.; girdle protruding less than 1 mm. 2n = 22.

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

     Information From

    Cactaceae
    World Flora Online Data. 2017.
    • 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
    World Flora Online consortium
    http://www.worldfloraonline.org/organisation/WFO
    World Flora Online Data. 2018.
    • C CC0 1.0 Universal (CC0 1.0).
    International Union for Conservation of Nature v.3
    https://www.iucnredlist.org/
    IUCN 2019. The IUCN Red List of Threatened Species. Version 2019-1.
    • D See IUCN Terms and conditions of use http://www.iucnredlist.org/info/terms-of-use
    International Union for Conservation of Nature
    https://www.iucn.org/
    IUCN 2016. IUCN Red List of Threatened Species. Version 2016-2
    • E All Rights Reserved