Vernonia tanganyikensis R.E.Fr.

Species

Angiosperms > Asterales > Asteraceae > Vernonia

Characteristics

Herb with annual stems to 1 m from a woody rootstock; stems one to many, branched, yellowish brown tomentose.. Leaves subsessile, narrowly oblong or lanceolate, to 13.5 cm long and 3 cm wide, base cuneate to obtuse, margins crenate or crenulate or remotely dentate, apex rounded or obtuse, hispid or scabridulous above, grey-tomentose beneath with brown-tomentose veins.. Capitula many in terminal clusters or large panicles; involucre 7–10 mm long; phyllaries spreading, linear-lanceolate with purplish aristate apices, 2–8 mm, woolly.. Corolla purple, 5–8 mm long, lobes strigose.. Achenes 2–2.5 mm long, subcylindric to 4–5-angular, hispidulous; outer pappus of short linear scales or setae, inner pappus of white setae 7–8 mm long.
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Leaves subsessile, up to c. 13.5 x 3 cm., narrowly oblong to narrowly oblong-lanceolate, rounded or obtuse at the apex, cuneate to obtuse at the base, margins irregularly crenate or crenulate to remotely dentate; lamina discolorous, upper surface hispid, greenish, becoming bullate and scabridous, lower surface softly felted and greyish-tomentose with venation reticulate and prominent, the midrib and sometimes the veins brownish-tomentose.
Phyllaries numerous, spreading, linear-lanceolate with sharply acute purplish aristate apices, very densely strigose or woolly, increasing from c. 2 mm. long outside to c. 8 mm. long inside.
Achenes 2–2.5 mm. long, subcylindric to somewhat 4–5-angular, hispidulous; outer pappus of short, linear scales or paleaceous setae; inner pappus of white barbellate setae 7–8 mm. long.
Capitula numerous, in terminal clusters on branches, or arranged in a large panicle-like synflorescence.
Corollas purple, 5–8 mm. long, very narrowly funnel-shaped, strigose-pubescent on the lobes.
Stems annual, 1-many, branched and leafy above, terete, yellowish-brown tomentose.
An erect slender perennial herb, to c. 1 m. tall from a woody rootstock.
Involucres 7–10 mm. long, broadly obconic.
Life form
Growth form herb
Growth support -
Foliage retention -
Sexuality hermaphrodite
Pollination -
Spread -
Mature width (meter) -
Mature height (meter) 1.0
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Nitrogen fixer -
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Environment

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Hardiness (USDA) -

Usage

Uses -
Edible -
Therapeutic use -
Human toxicity -
Animal toxicity -

Cultivation

Mode -
Germination duration (days) -
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Distribution

Vernonia tanganyikensis world distribution map, present in Zambia

Identifiers

LSID urn:lsid:ipni.org:names:259502-1
WFO ID wfo-0000086028
COL ID 8VG9R
BDTFX ID -
INPN ID -
Wikipedia (EN)
Wikipedia (FR)

Synonyms

Vernonia tanganyikensis