Senecio rigidus L.

Species

Angiosperms > Asterales > Asteraceae > Senecio

Characteristics

Herbaceus erectus glabriusculus, caule tereti, foliis caulinis amplexicaulibus lyrato-pinnatifidis, lobis ovatus inaequalibus argute calloso-serratis terminali majore sublobato, corymbo composito polycephalo conferto, pedicellis squamellatis, invol. Calyculati squamis circ. 20 acuminatis glabris disco paulo brevioribus, ligulis 9-10 oblongis parvis, fl. disci circ. 30 achaeniis minimis glabriusculis. In Africa Capensi ad Zwellendam legit cl. Ecklon. Capitula fere S. lancei. Medius inter S. rigidum et phalacrolaenum. Folia pube sparsa rara utrinque subasperula, 8 poll. Longa, 2 poll. Lata, radicalia ign. (v.s.) Var subcanescens, ramis hinc inde puberis, foliis subtus canescentibus, fl. disci 25-30, ligulis 8-9.
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Herbaceous, perennial shrub, up to 1.5 m high. Stems much branched, ribbed, roughly hispid. Leaves dense, sessile, oblong, obovate-oblong or fiddle-shaped, up to 75 mm long, base stem-clasping, auriculate, margins revolute, sharply and unequally toothed, green and rough above, cobwebby and net-veined below. Inflorescence a much-branched corymb. Capitula many, small, disc and rays (5-8) bright yellow; involucre campanulate; bracts ± 20, 3-4 mm long; calyculus bracts several, minute. Flowering time Sept.-Jan. Cypselae cylindrical, 2 mm long, ribbed, hairy.
Robust, densely leafy, roughly hairy shrub to 1.5 m, with scabrid stems. Leaves oblong to oblanceolate, irregularly toothed, margins revolute, clasping at base, often woolly below with raised veins. Flower heads radiate, small, in branched corymbs, yellow, involucres calycled.
Life form perennial
Growth form shrub
Growth support free-standing
Foliage retention -
Sexuality -
Pollination -
Spread -
Mature width (meter) -
Mature height (meter) 1.5
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) 9-11

Usage

Uses -
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 rigidus unspecified picture

Distribution

Senecio rigidus world distribution map, present in South Africa

Identifiers

LSID urn:lsid:ipni.org:names:247304-1
WFO ID wfo-0000120309
COL ID 4WMVB
BDTFX ID -
INPN ID -
Wikipedia (EN)
Wikipedia (FR)

Synonyms

Senecio rigidus