1. Family: Asteraceae Bercht. & J.Presl
    1. Genus: Vernonia Schreb.
      1. Vernonia retifolia S.Moore

        This species is accepted, and its native range is DR Congo to Zambia.

    [FZ]

    Compositae, G. V. Pope. Flora Zambesiaca 6:1. 1992

    Habit
    A stout erect tough perennial herb, to c. 1 m. tall from a large woody rootstock; tuberous-rooted? Stems annual, usually solitary, simple or sparingly branched near the apex, densely leafy, strongly striate, greyish-tomentellous.
    Leaves
    Leaves sessile, to c. 16 x 4 cm., ± oblanceolate to narrowly elliptic, acute at apex, cuneate at base, margins crenate-serrate; lamina thinly coriaceous, finely pubescent on both surfaces usually more densely so beneath, soon glabrescent, glandular beneath; venation finely reticulate and markedly prominent beneath.
    Capitulum
    Capitula c. 5–12 in lax clusters, or solitary on short ± leafy branches; bracts leaf-like, to c. 4 x 2 cm., subtending and equal to, or overtopping the capitula.
    Involucre
    Involucres c. 20 x 20 mm., spreading to c. 30 mm. wide, campanulate.
    Phyllaries
    Phyllaries many-seriate, at least the outer apically appendaged, brownish, cartilaginous, pubescent outside where exposed; the outermost ± wholly leaf-like, often overtopping the capitulum, with appendages large rotund reticulate crustaceous, enclosing shorter appressed-imbricate inner phyllaries; the inner phyllaries lorate, increasing to c. 18 mm. long while their appendages reduce to a narrow membranous brownish-purple apical tip.
    Florets
    Florets c. 30 per capitulum.
    Corolla
    Corollas mauve fading to creamy-white, c. 22 mm. long, long slender tubular below abruptly widening into a short cylindric limb exserted above the pappus.
    Fruits
    Achenes 3–4 mm. long, broadly subcylindric and tapering slightly to the base, 10-ribbed, with a thin flat annular carpopodium, ± densely strigose-hispid, pappus several-seriate, copious somewhat caducous, setae pale-brownish, barbellate on the margins, c. 2 mm. long and subulate-paleate on outside increasing to c. 16 mm. long on inside, flattened and slightly ribbon-like.

    Distribution

    Native to:

    Zambia, Zaïre

    Vernonia retifolia S.Moore appears in other Kew resources:

    First published in J. Linn. Soc., Bot. xlvii. 264 (1925)

    Accepted by

    • Roskov Y. & al. (eds.) (2018). Species 2000 & ITIS Catalogue of Life Naturalis, Leiden, the Netherlands.

    Sources

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

    Kew Backbone Distributions
    The International Plant Names Index and World Checklist of Selected Plant Families 2019. 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 2019. 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