Nelsia quadrangula (Engl.) Schinz
  • Vierteljahrsschr. Naturf. Ges. Zürich


Cite taxon page as 'WFO (2020): Nelsia quadrangula (Engl.) Schinz. Published on the Internet;http://www.worldfloraonline.org/taxon/wfo-0000379935. Accessed on: 29 Mar 2020'

Morphology

Branches of partial inflorescence and bases of bracteoles incrassate and lignescent in fruit, the whole forming a soft, silky-hairy, burr-like unit.

  • Provided by: [B].Plants Of the World Online Portal - FZ
    • Source: [
    • 1
    • ]. 

    Bracteoles of the partial inflorescences broadly cordate-ovate, 5–7 mm. long, ciliate or pilose, hyaline with the darker midrib excurrent in a fine arista up to 1.5 mm. long; bracteoles of secondary triads deltoid-ovate, c. 7–9 mm. long, pilose along the midrib with a rigid arista; bracteoles of the sterile flowers narrower, densely pilose along the midrib with multicellular hairs, the arista very long (almost as long as the lamina), more solid in fruit and finally up to c. 12 mm. long.

  • Provided by: [B].Plants Of the World Online Portal - FZ
    • Source: [
    • 1
    • ]. 

    Fruit compressed-ovoid, c. 3 mm. long, apex concave with a distinct raised rim; seed brown, smooth and shining, c. 2 mm. long, finely reticulate.

  • Provided by: [B].Plants Of the World Online Portal - FZ
    • Source: [
    • 1
    • ]. 

    Sterile flowers of 2 rapidly developing linear, bracteoliform processes densely clothed with long white hairs.

  • Provided by: [B].Plants Of the World Online Portal - FZ
    • Source: [
    • 1
    • ]. 

    Inflorescence considerably lengthening in fruit, (1.5) 2.5–16 × 1.5 × 2.5 (3) cm., axis more or less densely furnished with flexuose whitish hairs, formed of numerous densely set partial inflorescences comprising three or four fertile flowers, two central and solitary and the others subtended by a modified sterile flower on each side; partial inflorescences soon falling in fruit, the persistent bracts strongly deflexed.

  • Provided by: [B].Plants Of the World Online Portal - FZ
    • Source: [
    • 1
    • ]. 

    Bracts broadly ovate, 4.5–5.5 mm. long, furnished with appressed white hairs, rather abruptly acuminate, finely aristate with the long-excurrent midrib.

  • Provided by: [B].Plants Of the World Online Portal - FZ
    • Source: [
    • 1
    • ]. 

    Stem and branches quadrangular, thinly to more or less densely upwardly-appressed pilose.

  • Provided by: [B].Plants Of the World Online Portal - FZ
    • Source: [
    • 1
    • ]. 

    Leaves narrowly lanceolate to broadly elliptic or ovate, subacute to acuminate, those of the main stem and large branches 2.5–10 × 0.8–4.5 cm., moderately white pilose on both surfaces or more densely so below, cuneate or attenuate at the base into a distinct, 3–15 mm. long petiole; superior leaves of branches smaller, generally sessile.

  • Provided by: [B].Plants Of the World Online Portal - FZ
    • Source: [
    • 1
    • ]. 

    Annual herb with a slender taproot, erect, 40–90 cm. tall, with few to numerous opposite branches diverging at c. 45 degrees, the uppermost pair of branches with a sessile to shortly (to c. 3 cm.) pedunculate inflorescence between.

  • Provided by: [B].Plants Of the World Online Portal - FZ
    • Source: [
    • 1
    • ]. 

    Stamens c. 3.5–4.5 mm. long; filaments slender, fused for c. one quarter of their length to the pseudostaminodes; pseudostaminodes c. 1.5 mm. long, flabellate, dentate with a fimbriate dorsal scale; anthers narrowly oblong, c. 1 mm. long.

  • Provided by: [B].Plants Of the World Online Portal - FZ
    • Source: [
    • 1
    • ]. 

    Ovary c. 2 mm. long, obpyriform, delicate below with a flat, firm apex; style slender, c. 1.5 7–2 mm. long.

  • Provided by: [B].Plants Of the World Online Portal - FZ
    • Source: [
    • 1
    • ]. 

    Outer 2 tepals of fertile flowers linear-oblong, c. 6–7 mm. long, green centrally with 3 distinct ribs (the midrib distinctly excurrent in a fine, yellowish arista) broadly hyaline-margined, furnished with long, whitish multicellular hairs; inner 3 tepals similar but c. 1 mm. shorter, more narrowly hyaline-margined and somewhat widened at the base.

  • Provided by: [B].Plants Of the World Online Portal - FZ
    • Source: [
    • 1
    • ]. 

      Bibliography

     Information From

    Amaranthaceae
    World Flora Online Data. 2017.
    • A CC0 1.0 Universal (CC0 1.0).
    Plants Of the World Online Portal - FZ
    https://www.kew.org/science/who-we-are-and-what-we-do/strategic-outputs-2020/plants-of-the-world-online
    http://www.plantsoftheworldonline.org/terms-and-conditions
    • B
    World Flora Online consortium
    http://www.worldfloraonline.org/organisation/WFO
    World Flora Online Data. 2018.
    • C CC0 1.0 Universal (CC0 1.0).