1. Family: Asteraceae Bercht. & J.Presl
    1. Genus: Ageratinastrum Mattf.
      1. Ageratinastrum polyphyllum (Baker) Mattf.

        This species is accepted, and its native range is Tanzania to S. Tropical Africa.


    Compositae, H. Beentje, C. Jeffrey & D.J.N. Hind. Flora of Tropical East Africa. 2005

    Perennial herb 40–125 cm tall, with several annual, sometimes slightly woody, erect stems from a woody rootstock; rootstock with woody taproot; stems tufted, ascending, branching near apex, rather densely leafy, usually densely tomentose and glandular.
    Leaves alternate, rarely almost whorled, subsessile, overlapping, lanceolate, ovate or elliptic, 1.2–4.5 cm long, 0.4–1.8 cm wide, base cuneate, rounded or cordate into a short petioloid base, obscurely remotely denticulate or subentire, apex acuminate, apiculate, thinly pubescent and glabrescent to finely crispate-tomentose or sericeous-tomentose above, more densely so and silvery or pale grey or rarely almost glabrous except on the main veins beneath, glandular-punctate.
    Capitula usually numerous in rather dense small scorpioid clusters in moderately dense terminal compound corymbiform cymes; involucre obconic-hemispherical, 3–5 mm long, 2.5–6 mm in diameter at flowering time; phyllaries 3–4-seriate, grey-green, purple near apex, oblong to lanceolate, 1–6.5 mm long, densely tomentose, recurving at the apex.
    Corolla mauve, lilac or purple (once described as white), densely hairy on lobes and upper part of tube, 4–6.3 mm long, lobes 2–2.5 mm long.
    Achenes 1.5–2.2 mm long, 4–5-angled, prismatic, glabrous or usually hairy on the angles at least towards the apex, often curved; pappus usually double, outer of 4–8 free or more or less connate shiny scales 0.5–1.3 mm long, inner pappus of fewer slightly longer flattened bristles, or absent.
    Fig. 53, p. 275.
    Montane grassland or scattered tree grassland, may be locally common; 1600–2500 m
    T4 T5 T7

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

    An erect tufted perennial herb to c. 1 m. tall, with annual stems from a woody rootstock; rootstock with a woody taproot.
    Stems many, strict, branching near the apex, densely leafy with internodes mostly less than 10 mm. long, densely pilose-tomentose with glands between the hairs, becoming pubescent or glabrescent below; indumentum of short-stalked flagelliform hairs.
    Leaves sessile or subsessile, overlapping, alternate or spirally arranged, sometimes subopposite or whorled, 2–4.5 x 0.4–1.2 cm., narrowly oblong-lanceolate to narrowly-elliptic or ovate, acute mucronate at the apex, cuneate to rounded below, margins ± revolute, upper surface densely tomentellous to sparsely pilose, lower surface paler, tomentose or pubescent, glandular punctate.
    Capitula numerous, in few to many 3–15-capitulate clusters, or the capitulum-clusters ± corymbiformly cymose on branches 1.5–9 cm. long, occasionally the capitula somewhat scorpioidly arranged along branches.
    Involucres 3–5 x 4–6 mm., campanulate to subglobose, florets exserted.
    Phyllaries several-seriate, purple above, acute, tomentose to woolly outside; the outer from c. 1 mm. long, narrowly ovate; the inner to c. 5 mm. long, narrowly oblong to lanceolate.
    Receptacle shallowly alveolate.
    Corollas purple, darker in the upper half, 4–6 mm. long, narrowly funnel-shaped, puberulous to tomentellous outside or only the lobes hispidulous, glandular.
    Achenes 1.5–2 mm. long, narrowly oblong-obovoid, often curved, truncate at the apex, 4–5-angular, obscurely ribbed on the angles and ± sparsely setulose, the faces smooth with scattered brown minute gland-dots, otherwise glabrous; pappus of 4–7 broad ± united shiny scales, 0.5–1 mm. long and lacerate on the upper margin, or sometimes the scales free and alternating with 4–7-narrower paleaceous setae which exceed or ± equal the scales in length.



    Native to:

    Malawi, Tanzania, Zambia

    Ageratinastrum polyphyllum (Baker) Mattf. appears in other Kew resources:

    Date Reference Identified As Barcode Type Status
    Whyte, A. [252], Malawi K000273361 holotype

    First published in Notizbl. Bot. Gart. Berlin-Dahlem 11: 412 (1932)

    Accepted by

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


    Flora of Tropical East Africa
    • G.V. Pope in Flora Zambesiaca 6: 181, t. 30a (1992).
    • Lisowski in Fragm. Flor. Geobot. 37: 354, fig. 23g (1992).
    • C. Jeffrey in Kew Bulletin 43: 271 (1988).
    • Cribb & Leedal, Mountain Flow. S. Tanz.: 149, fig. 39a (1982).
    • Kalanda & Lisowski in Bulletin du Jardin Botanique National de Belgique 51: 457, fig. 1/1–5 (1981).
    • Mattf. in Notizblatt des Botanischen Gartens und Museums zu Berlin-Dahelm 11: 412 (1932).


    Flora Zambesiaca
    Flora Zambesiaca

    Flora of Tropical East Africa
    Flora of Tropical East Africa

    Herbarium Catalogue Specimens
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    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/
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    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