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  1. Family: Amaranthaceae Juss.
    1. Genus: Nelsia Schinz
      1. Nelsia quadrangula (Engl.) Schinz

        This species is accepted, and its native range is Angola to Botswana.

    [FZ]

    Amaranthaceae, C. C. Townsend. Flora Zambesiaca 9:1. 1988

    Habit
    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.
    Stem
    Stem and branches quadrangular, thinly to more or less densely upwardly-appressed pilose.
    Leaves
    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.
    Inflorescences
    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.
    Bracts
    Bracts broadly ovate, 4.5–5.5 mm. long, furnished with appressed white hairs, rather abruptly acuminate, finely aristate with the long-excurrent midrib.
    Bracteoles
    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.
    Flowers
    Sterile flowers of 2 rapidly developing linear, bracteoliform processes densely clothed with long white hairs.
    Sterile
    Sterile flowers of 2 rapidly developing linear, bracteoliform processes densely clothed with long white hairs.
    Tepal
    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.
    Pistil
    Ovary c. 2 mm. long, obpyriform, delicate below with a flat, firm apex; style slender, c. 1.5 7–2 mm. long.
    Stamens
    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.
    Branches
    Branches of partial inflorescence and bases of bracteoles incrassate and lignescent in fruit, the whole forming a soft, silky-hairy, burr-like unit.
    Fruits
    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.

    Images

    Distribution

    Native to:

    Angola, Botswana, Namibia

    Synonyms

    Other Data

    Nelsia quadrangula (Engl.) Schinz appears in other Kew resources:

    Date Reference Identified As Barcode Type Status
    Aug 20, 2008 Crawford, F. [138], Namibia K000450299
    Welw. [6501], Angola K000243601 Unknown type material

    Bibliography

    First published in Vierteljahrsschr. Naturf. Ges. Zürich 56: 247 (1911)

    Accepted by

    • Figueiredo, E. & Smith, G.F. (2008). Plants of Angola Strelitzia 22: 1-279. National Botanical Institute, Pretoria.
    • Germishuizen, G. & Meyer, N.L. (eds.) (2003). Plants of Southern Africa an annotated checklist Strelitzia 14: 1-1231. National Botanical Institute, Pretoria.
    • Launert, E. (ed.) (1988). Flora Zambesiaca 9(1): 1-179. Royal Botanic Gardens, Kew.

    Literature

    Kew Backbone Distributions

    • Figueiredo, E. & Smith, G.F. (2008). Plants of Angola Strelitzia 22: 1-279. National Botanical Institute, Pretoria.
    • Launert, E. (ed.) (1988). Flora Zambesiaca 9(1): 1-179. Royal Botanic Gardens, Kew.

    Sources

    Flora Zambesiaca
    Flora Zambesiaca
    http://creativecommons.org/licenses/by-nc-sa/3.0

    Herbarium Catalogue Specimens
    'The Herbarium Catalogue, Royal Botanic Gardens, Kew. Published on the Internet http://www.kew.org/herbcat [accessed on Day Month Year]'. Please enter the date on which you consulted the system.
    Digital Image © Board of Trustees, RBG Kew http://creativecommons.org/licenses/by/3.0/

    Kew Backbone Distributions
    The International Plant Names Index and World Checklist of Selected Plant Families 2020. Published on the Internet at http://www.ipni.org and http://apps.kew.org/wcsp/
    © Copyright 2017 World Checklist of Selected Plant Families. http://creativecommons.org/licenses/by/3.0

    Kew Names and Taxonomic Backbone
    The International Plant Names Index and World Checklist of Selected Plant Families 2020. Published on the Internet at http://www.ipni.org and http://apps.kew.org/wcsp/
    © Copyright 2017 International Plant Names Index and World Checklist of Selected Plant Families. http://creativecommons.org/licenses/by/3.0