Senecio affinis Dc.

Species

Angiosperms > Asterales > Asteraceae > Senecio

Characteristics

Perennial herb up to c. 1 m tall, stock stout, woody, crowned with old fibrous leaf bases, flowering stems solitary or several from the crown, usually simple below the inflorescence, glabrous or sometimes lightly cobwebby, glabrescent, or thinly pilose, leafy. Radical leaves up to c. 35 x 1(-1.5) cm, roughly half the length petiolar, blade linear-lanceolate, apex subacute, base tapering gradually to a narrowly winged petiolar part, then expanded, clasping, margins closely and minutely callose-denticulate, glabrous or rarely thinly cottony; cauline leaves similar but narrower and soon sessile, often somewhat eared at the base, sometimes very shortly decurrent, passing upwards into linear-lanceolate acuminate bracts. Heads radiate, up to c. 35 corymbose-paniculately arranged on long sparsely bracteate peduncles. Involucre campanulate, bracts c. 12, (5.5-)6(-7) mm long, much shorter than the disc, keeled, nerves resinous, calyculus ample, inner bracts nearly equalling the involucre or much shorter. Rays 8, relatively short, reflexed, they and the disc bright yellow, corolla lobes with median line. Achenes c. 4 mm long, fusiform, ribbed, glabrous.
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Perennial herb, up to 1 m high from stout, woody stock crowned with old fibrous leaf bases; flowering stems solitary or several from crown, simple below inflorescence, glabrous or sometimes lightly cobwebby, glabrescent or thinly pilose, leafy. Leaves: blade of basal leaves linear (very narrowly obovate), up to 350 x 15 mm, 1/2 of this petiolar, apex subacute, base tapering to narrowly winged petiolar part, then expanded, clasping; margins closely and minutely callose-denticulate, glabrous or rarely thinly cottony; stem leaves similar but narrower, passing upwards into inflorescence bracts, sessile, ± eared at base, shortly decurrent. Heads radiate, up to 35 corymbose-paniculately arranged. Involucral bracts ± 12, 5.5-7.0 mm long, much shorter than pappus of disc florets; calyculus bracts ample, inner ± equalling involucre or much shorter. Flowers: ray florets 8; ray and disc florets bright yellow; Dec.-Feb. Fruit with cypsela (and ovary) glabrous.
Perennial herb, stock stout, woody. Flowering stems 1-many, up to 1 m high, simple, glabrous to ± cobwebby, leafy, old fibrous leaf bases below. Leaves: radical leaves linear-lanceolate, up to 350 mm long, lower half petiolar, narrowly winged, then expanded, clasping, mostly glabrous, margins closely, minutely callose-denticulate; cauline leaves ± similar, sessile, becoming bracts. Inflorescence a corymbose panicle; peduncles long, sparsely bracteate. Capitula up to 35, radiate, disc and rays bright yellow, rays 8, ± short, reflexed; involucre campanulate; bracts ± 12, 5.5-7.0 mm long; calyculus bracts many. Flowering time mainly Dec., Jan. Cypselae fusiform, ± 4 mm long, ribbed, glabrous.
Perennial herb, up to 1 m high. Leaves glabrous or rarely thinly cottony, radical and cauline; radical leaves petiolate; cauline leaves sessile, shortly decurrent; leaf margins closely and minutely callose-denticulate. Heads radiate. Involucral bracts shorter than pappus of disc flowers. Ovaries (and achenes) glabrous. Flowers bright yellow.
Life form perennial
Growth form herb
Growth support free-standing
Foliage retention -
Sexuality -
Pollination -
Spread -
Mature width (meter) -
Mature height (meter) 1.0
Root system -
Rooting depth (meter) -
Root diameter (meter) -
Flower color
Blooming months -
Fruit color -
Fruiting months -
Nitrogen fixer -
Photosynthetic pathway -

Environment

Light -
Soil humidity 1-3
Soil texture -
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 affinis unspecified picture

Distribution

Senecio affinis world distribution map, present in Lesotho and South Africa

Identifiers

LSID urn:lsid:ipni.org:names:243659-1
WFO ID wfo-0000071455
COL ID 6YFMS
BDTFX ID -
INPN ID -
Wikipedia (EN)
Wikipedia (FR)

Synonyms

Senecio affinis Hertia natalensis Senecio paucicephalus Hertia natalensis Senecio albanensis var. pseudodecurrens Senecio albanensis var. leiophyllus