Vernonia bruceana Wild

Species

Angiosperms > Asterales > Asteraceae > Vernonia

Characteristics

Phyllaries lanceolate to lorate, coriaceous and thinly pubescent in upper part, glabrous and stramineous in lower part, apically appendaged; the outermost phyllaries from c. 3 mm. long (including appendage); the inner phyllaries increasing to c. 12 x 3 mm., their appendages diminishing in size; appendages up to c. 4 x 5 mm., oblong-ovate to very broadly ovate, often recurved or spreading, membranous, acute to acuminate, with nerves somewhat raised, densely tomentellous outside where exposed.
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Leaves with petioles to c. 3 mm. long; lamina coriaceous, up to c. 13 x 3.2 cm., oblonceolate to ± narrowly elliptic, apex acute or obtuse, base cuneate, margins irregularly serrate to subserrate, upper surface scabridulous or glabrescent, lower surface finely puberulous and prominently closely reticulate.
An erect slender perennial herb, or subshrub to c. 2 m. tall from a large woody rootstock; tuberous-rooted? Stems usually solitary, becoming woody below, simple, branching only near the apex, leafy, ± appressed grey-tomentose, becoming puberulous below, glandular; hairs ± short-stalked flagelliform.
Achenes dark-brown when mature, c. 4 mm. long, subcylindric-subfusiform, c. 10-ribbed, hispid; pappus several-seriate, copious, somewhat caducous, setae flattened barbellate increasing from c. 1 mm. long on the outside to c. 8 mm. long inside.
Capitula in numerous 3–9-capitulate clusters; clusters ± scorpioidly cymose along the branches; synflorescence branches divaricate, to c. 15 cm. long, leafy with leaves bract-like above, tomentellous; capitula stalks 0–10 mm. long.
Corollas pale mauve to white, 14–16 mm. long, slender-tubular below, abruptly dilated into a cylindric limb exserted beyond the pappus.
Involucres 10–12 x 7–14 mm., ± narrowly cylindric-campanulate.
Florets c. 5 per capitulum.
Life form perennial
Growth form herb
Growth support -
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Sexuality hermaphrodite
Pollination -
Spread -
Mature width (meter) -
Mature height (meter) 2.0
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Nitrogen fixer -
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Environment

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Usage

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

Cultivation

Mode -
Germination duration (days) -
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Distribution

Vernonia bruceana world distribution map, present in Zambia

Identifiers

LSID urn:lsid:ipni.org:names:257995-1
WFO ID wfo-0000036604
COL ID 5B4L5
BDTFX ID -
INPN ID -
Wikipedia (EN)
Wikipedia (FR)

Synonyms

Vernonia bruceana Vernonia luaboensis