Senecio skirrhodon Dc.

Species

Angiosperms > Asterales > Asteraceae > Senecio

Characteristics

Ascending, annual or short-lived perennial herb, 15-50 cm tall. Stems glabrous, much-branched above and below, sometimes becoming ± leafless and woody toward base. Cauline lvs usually glabrous or with scattered hairs on midvein below and ciliate at base, apetiolate (cuneately narrowed to short petiole in lowermost lvs), fleshy, pale to mid green, oblanceolate to narrow-obovate, mostly entire and slightly involute, sometimes serrulate and often some lvs serrate or pinnatisect with 2-4 incisions on each side, acute and mucronate, cuneate to amplexicaul base, 20-60 × 2-10-(15) mm; venation palmate. Uppermost lvs smaller, often lanceolate and more often amplexicaul. Capitula solitary or few in corymbs. Supplementary bracts 9-17, narrow-triangular, 2-3 mm long. Involucral bracts 18-23, linear, glabrous, 5-7 mm long. Ray florets 11-16; ligules bright yellow, (5.5)-7-13 mm long. Disc golden yellow. Achenes subcylindric, constricted below apex, usually with (2)-3-(6) rows of hairs in grooves between broad ribs, sometimes glabrous, 1.6-2.2 mm long; pappus 3-5 mm long.
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A bushy glabrous herb, probably always perennial, branches erect or decumbent, becoming woody, sometimes rooting, leafy. Leaves fleshy, up to 10 x 2 cm but very variable and sometimes broad in relation to length, lanceolate to broadly elliptic tapering to a narrow, petiole-like, half-clasping base, apex acute to obtuse, margins denticulate, rarely more coarsely toothed or lobed. Heads radiate, few on sparsely bracteate peduncles corymbosely arranged. Involucre campanulate, bracts c. 20, 6(-7) mm long, equalling the disc, keeled, nerves 1-3, resinous, calyculus of short, broad bracts, often overlapping. Rays c. 13, they and the disc canary yellow, corolla lobes of disc flowers with a short median resinous line. Achenes 2.5 mm long, cylindric, hispid between the ribs.
Perennial(?) herb, bushy, glabrous. Stems erect or decumbent, becoming woody, sometimes rooting, leafy. Leaves fleshy, very variable, up to 100 x 20 mm, lanceolate to broadly elliptic, base petiole-like, half-clasping, apex acute to obtuse, margins mostly denticulate. Inflorescence a corymb; peduncles sparsely bracteate. Capitula few, radiate, disc and rays (± 13) canary yellow; involucre campanulate; bracts ± 20, 6-7 mm long, resinous; calyculus bracts short, broad. Flowering time all year. Cypselae 2.5 mm long, cylindrical, hispid between ribs.
Glabrous perennial to 30 cm. Leaves oblanceolate, clasping below, margins revolute, minutely toothed, curved upward above, pungent. Flower heads radiate, in lax corymbs, yellow.
Life form perennial
Growth form herb
Growth support free-standing
Foliage retention -
Sexuality -
Pollination -
Spread -
Mature width (meter) -
Mature height (meter) 0.15 - 0.5
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 skirrhodon unspecified picture
Senecio skirrhodon unspecified picture

Distribution

Senecio skirrhodon world distribution map, present in New Zealand and South Africa

Identifiers

LSID urn:lsid:ipni.org:names:247620-1
WFO ID wfo-0000134800
COL ID 4WN6W
BDTFX ID -
INPN ID -
Wikipedia (EN)
Wikipedia (FR)

Synonyms

Senecio skirrhodon Senecio madagascariensis var. crassifolius