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Senecio arenarius Thunb.

Species

Angiosperms > Asterales > Asteraceae > Senecio

Characteristics

Annual, 100-400 mm tall, subglabrous or thinly to densely glandular-pubescent on stems and leaves. Leaves variable, oblanceolate and irregularly toothed to deeply pinnatisect, (10-)30-80 mm long, lower leaves tapering below and often subpetiolate, upper mostly auriculate, margins sometimes revolute. Flowerheads in loose corymbs, radiate, yellow with mauve to purple (rarely white) ray florets; involucre cylindrical, 5-8 mm diam., glandular-pubescent, bracts 15-20, 0.5-1 x 7-8 mm, bracteoles 2-6, subulate.
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Viscose-pubescent annual herb, up to 500 mm tall. Leaves polymorphic: oblong or obovate, subentire or toothed, lyrate, pinnatifid or bipinnatifid with cuneate, toothed or incised lobes, auriculate at base. Inflorescence laxly corymbose. Involucre nude at base or nearly so. Heads radiate, with 12 or 33 involucral bracts and 6 or 7 rays. Achenes puberulous on striae. Flowers with mauve rays and yellow disc.
Glandular-hairy annual, 15-40 cm. Leaves toothed to pinnatisect, margins sometimes revolute. Flower heads radiate, several, terminal in branched corymbs, yellow with mauve (rarely white or pale yellow) rays.
Life form annual
Growth form herb
Growth support free-standing
Foliage retention -
Sexuality -
Pollination -
Spread -
Mature width (meter) -
Mature height (meter) 0.3 - 0.45
Root system -
Rooting depth (meter) -
Root diameter (meter) -
Flower color
Blooming months -
Fruit color -
Fruiting months -
Nitrogen fixer -
Photosynthetic pathway -

Environment

Light -
Soil humidity -
Soil texture 5-6
Soil acidity -
Soil nutriment -
Hardiness (USDA) 9-12

Usage

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

Cultivation

Mode -
Germination duration (days) 10 - 21
Germination temperacture (C°) 18 - 23
Germination luminosity light
Germination treatment -
Minimum temperature (C°) -
Optimum temperature (C°) -
Size -
Vigor -
Productivity -

Images

Senecio arenarius unspecified picture

Distribution

Senecio arenarius world distribution map, present in Botswana, Namibia, and South Africa

Identifiers

LSID urn:lsid:ipni.org:names:243882-1
WFO ID wfo-0000080642
COL ID 4WJMT
BDTFX ID -
INPN ID -
Wikipedia (EN)
Wikipedia (FR)

Synonyms

Senecio myrrhifolius Senecio arenarius Senecio elegans Senecio cakilefolius var. hispidulus
WorldFloraDB 2024