Pleiotaxis huillensis subsp. argentea (M.Taylor) S.Ortiz & Rodr.Oubiña

This subspecies is accepted, and its native range is DR Congo to Angola.

[FZ]

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

Morphology General Habit
A lax perennial herb or subshrub to 0.5–2.5 m. tall, from a woody rootstock.
Morphology Stem
Stems 1 -many, sericeous-lanate, simple and leafless in the lower two thirds, becoming woody; ± diffusely branched and leafy in the upper part, with leaves clustered towards the ends of branches.
Morphology Leaves
Leaves discolorous, markedly bullate, briefly stem-sheathing at the base, the midribs often somewhat recurved; lamina mostly 3–10 x 1–4 cm., ovate to oblong-ovate, acute at the apex, broadly cuneate below, tapering into a narrowly winged petiole-like midrib to c. 5 mm. long, before widening into a short membranous sericeous-lanate sheath ± as long as wide, or lamina base somewhat rounded and subpetiolate; margins sharply serrulate; upper surface bullate, silvery- or greyish-green thinly lanate-pubescent, sometimes sparsely so; lower surface densely greyish or brownish araneose-sericeous; main nerves 7–11 on each side of the midrib, tertiary venation reticulate, nerves and veins ± impressed on upper surface, prominent beneath.
Morphology Reproductive morphology Inflorescences Capitulum
Capitula numerous, usually terminal on branches, with 2–7 subsidiary capitula in axils below, on short or long, stout stalks.
Morphology Reproductive morphology Inflorescences Bracts Involucre
Involucres mostly 15–20 x 8–20 mm., spreading to c. 30 mm. wide, cylindric-campanulate.
Morphology Reproductive morphology Inflorescences Bracts Phyllaries
Phyllaries usually purple, chartaceous, araneose-tomentellous outside, margins glabrous, broadly hyaline, from 2 mm. long and ovate outside, increasing to c. 20 mm. long and becoming narrowly lanceolate-lorate inside; middle phyllaries up to c. 4 mm. wide, ovate, obtuse to ± rounded; inner phyllaries narrower.
Morphology Reproductive morphology Flowers Florets
Florets numerous; corollas bright- or deep-red, up to c. 18 mm. long with a long slender tube abruptly dilated into a short cylindric, deeply narrowly-lobed limb which exceeds the pappus and involucre, glabrous.
Morphology Reproductive morphology Fruits
Achenes 6–9 mm. long, narrowly cylindric, obscurely many-ribbed, densely appressed hispid; pappus of copious barbellate setae to c. 14 mm. long.

Native to:

Angola, Zambia, Zaïre

Pleiotaxis huillensis subsp. argentea (M.Taylor) S.Ortiz & Rodr.Oubiña appears in other Kew resources:

Date Reference Identified As Barcode Type Status
Gossweiler, J. [1819], Angola K001307222
Gossweiler, J. [4146pp], Angola K001307223
Burtt, B.D. [6437] Pleiotaxis argentea K000252302 Unknown type material
Burtt, B.D. [6437] Pleiotaxis argentea K000252303 Unknown type material

First published in Nordic J. Bot. 19: 25 (1999)

Accepted by

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

  • Flora Zambesiaca

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

  • Herbarium Catalogue Specimens

    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 2022. 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 2022. 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