Senecio retrorsus Dc.

Species

Angiosperms > Asterales > Asteraceae > Senecio

Characteristics

Perennial herb with a stout woody stock, glabrous except for the woolly crown and woolly hairs hidden in the leaf axils, flowering stems up to c. 60 cm tall, solitary, either simple below the inflorescence branches or branching from near the base, leafy. Leaves up to 15 x 1,5(-4) cm, mostly crowded on the lower part of the stem then more distant and decreasing in size upwards, lanceolate to linear-lanceolate, occasionally more or less elliptic, the lowermost sometimes oblanceolate, apex acute to acuminate, base more or less cordate and half-clasping or broad and minutely eared, margins thickened, distantly callose-denticulate or subentire, those of the upper leaves often rolled under, the leaves then becoming long-acuminate, leathery, side nerves sharply ascending but scarcely visible. Heads radiate, many on sparsely bracteate peduncles corymbose-paniculately arranged. Involucre turbinate, bracts (5-)8, (3.6-)4-5(-6) mm long, much shorter than the disc, broad, flat, nerves resinous, calyculus wanting or 1 or 2 small bracts. Rays 2-5, they and the disc bright yellow. Achenes c. 3.5 mm, ribbed, glabrous.
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Perennial herb, glabrous, rootstock stout, woody, crown woolly. Flowering stem solitary, up to 0.8 m high, simple or branching near base, leafy below. Leaves leathery, lanceolate to linear-lanceolate, up to 150 mm long, base ± cordate and half-clasping, fewer and smaller upwards, margins thick, subentire or ± callose-denticulate. Inflorescence corymbose-paniculate. Capitula many, radiate, disc and rays (2-5) bright yellow; involucre turbinate; bracts 5-8, 3.5-6.0 mm long; calyculus bracts ± absent. Flowering time Sept.-Mar. Cypselae cylindrical, 3.5 mm long, ribbed, glabrous.
A herb.
Life form perennial
Growth form herb
Growth support free-standing
Foliage retention -
Sexuality -
Pollination -
Spread -
Mature width (meter) -
Mature height (meter) 0.7
Root system -
Rooting depth (meter) -
Root diameter (meter) -
Flower color -
Blooming months -
Fruit color -
Fruiting months -
Nitrogen fixer -
Photosynthetic pathway -

Environment

It is a Mediterranean plant. It can grow in arid places.
Light -
Soil humidity -
Soil texture -
Soil acidity -
Soil nutriment -
Hardiness (USDA) 9-12

Usage

The leaves are cooked and eaten as a spinach.
Uses food medicinal poison
Edible leaves
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 -

Distribution

Senecio retrorsus world distribution map, present in Lesotho, South Africa, and Zimbabwe

Identifiers

LSID urn:lsid:ipni.org:names:247275-1
WFO ID wfo-0000073615
COL ID 6YH8C
BDTFX ID -
INPN ID -
Wikipedia (EN)
Wikipedia (FR)

Synonyms

Senecio retrorsus Senecio barbellatus Senecio graminicola Senecio retrorsus var. subedentulus Senecio latifolius var. retrorsus Senecio retrorsus var. retrorsus Senecio latifolius var. barbellatus