Helminthotheca echioides (L.) Holub
  • Folia Geobot. Phytotax. 8(2): 176 (1973)


Cite taxon page as 'WFO (2023): Helminthotheca echioides (L.) Holub. Published on the Internet;http://www.worldfloraonline.org/taxon/wfo-0000123886. Accessed on: 07 Feb 2023'

General Information

Leaf blades 50–150(–250) × 10–50(–80+) mm. Peduncles 1–5+ cm, bristly hispid. Calyculi: bracts 9–15+ × 3–5+ mm, margins and tips bristly-ciliate. Phyllaries often sigmoid in fruit, abaxial faces and tips bristly. Cypselae: bodies 2.5–3 mm, beaks 2.5–5 mm; pappi 4–7 mm. 2n = 10.

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

    Morphology

    Hispid annual or perennial herb, up to 1 m high. Radical and lower stem leaves oblanceolate, narrowed to petiole-like base, irregularly toothed; upper leaves lanceolate to oblong, sessile, clasping. Outer bracts large, ovate-cordate. Achenes long-beaked. Flowers yellow; December to March and in June.

  • Provided by: [B].e-Flora of South Africa
    • Source: [
    • 2
    • ]. 

    Annual or perennial herb, up to 1 m high; hispid; with milky latex. Leaves alternate; blade of basal and lower stem leaves narrowly obovate, narrowed to petiole-like base, margins irregularly dentate; blade of upper leaves narrowly ovate to oblong, sessile, clasping, sometimes decurrent on stem. Heads ligulate, on short peduncles arranged in irregular corymb. Involucral bracts: outer bracts large, ovate-cordate; inner bracts linear to very narrowly ovate, apex long subulate. Receptacle epaleate. Flowers: yellow; Jan., May. Fruit with cypsela of 2 kinds: the outer hairy, with short beak, embraced by involucral bracts; the inner glabrous, wrinkled, long-beaked. Pappus of outer cypsela reduced bristles, of inner cypsela plumose bristles.

  • Provided by: [B].e-Flora of South Africa
    • Source: [
    • 3
    • ]. 

    A stout, erect, hispid, annual or perennial herb, stem to 100 cm, irregularly branched. Radical and lower stem leaves oblanceolate, narrowed below into a petiole-like base, up to 20 x 2.5 cm, irregularly toothed, upper leaves lanceolate to oblong, up to 10 x 2 cm, sessile, clasping, sometimes decurrent. Heads about 1.5 cm across on short peduncles arranged in an irregular corymb. Outer involucral bracts 5, ovate-cordate, leaflike, inner bracts c. 10, linear-lanceolate with a long, subulate, hispid process behind the tip. Flowers yellow. Achenes dimorphic, the outer villous, c. 3 mm long with a short beak and reduced pappus, embraced by the involucral bracts and retained in the head, inner glabrous, c. 2.5 mm long, transversely wrinkled, long-beaked, with copious plumose pappus, dispersed.

  • Provided by: [B].e-Flora of South Africa
    • Source: [
    • 4
    • ]. 

    Habitat

    A weed of disturbed places.

  • Provided by: [B].e-Flora of South Africa
    • Source: [
    • 2
    • ]. 

    Dry Grassland; Dwarf Karroid Shrubland. Weed of disturbed places.

  • Provided by: [B].e-Flora of South Africa
    • Source: [
    • 3
    • ]. 

    Distribution

    Native to Europe and Asia.

  • Provided by: [B].e-Flora of South Africa
    • Source: [
    • 2
    • ]. 

    Native to Europe and Asia.

  • Provided by: [B].e-Flora of South Africa
    • Source: [
    • 3
    • ]. 

    A native of the Mediterranean region and S.W. Asia, widespread in South Africa as a weed.

  • Provided by: [B].e-Flora of South Africa
    • Source: [
    • 4
    • ]. 

      Bibliography

     Information From

    Asteraceae
    http://worldfloraonline.org/organisation/Asteraceae
    Asteraceae. The daisy family. World Flora Online Data. 2022.
    • A CC0 1.0 Universal (CC0 1.0).
    e-Flora of South Africa
    e-Flora of South Africa. v1.21. 2018. South African National Biodiversity Institute. http://ipt.sanbi.org.za/iptsanbi/resource?r=flora_descriptions&v=1.21
    • B All Rights Reserved
    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.
    • C Flora of North America Association
    World Flora Online Consortium
    http://www.worldfloraonline.org/organisation/WFO
    World Flora Online Data. 2017.
    • D CC0 1.0 Universal (CC0 1.0).