Senecio dubitabilis C.Jeffrey & Y.L.Chen

Species

Angiosperms > Asterales > Asteraceae > Senecio

Characteristics

Herbs, annual. Stems erect, 5-30 cm tall, branching from base or middle; branches erect or spreading, glabrous or sparsely pubescent with long white hairs when young. Leaves sessile; blade spatulate, oblong-lanceolate, oblong, or linear, 3-7 × 0.3-2 cm, lower ones attenuate into a petioloid base, middle ones often ± expanded at base into irregularly toothed subamplexicaul auricles, pinnately shortly lobulate with entire or few-denticulate lobes to remotely dentate or entire, apex obtuse to acute. Upper leaves smaller, lanceolate to linear, margin denticulate or entire. Capitula discoid, few to many, terminal, usually laxly corymbose; peduncles 1.5-4 cm, slender, glabrous or sparsely pubescent, with 1 or 2 linear-lanceolate bracts. Involucres narrowly campanulate, 6-7 × 2.5-5 mm, calyculate; bracts of calyculus 4 or 5, linear-subulate, short, apically acute, sometimes shortly black tipped; phyllaries ca. 15, linear, 0.5-1 mm wide, herbaceous, with narrow membranous margins, glabrous, apically acute, finely shortly bearded and sometimes blackish. Ray florets absent. Disk florets many; corolla yellow, 6-6.5 mm, with 4-4.5 mm tube and cylindric limb; lobes ovate, ca. 0.3 mm. Anthers linear, ca. 1 mm, basally very shortly obtuse-auriculate, appendages ovate-lanceolate; antheropodia dilated toward base. Style branches ca. 0.6 mm. Achenes cylindric, 3-3.5 mm, densely pubescent. Pappus white, 7-7.5 mm. Fl. May-Sep.
Life form annual
Growth form herb
Growth support free-standing
Foliage retention -
Sexuality hermaphrodite
Pollination -
Spread -
Mature width (meter) -
Mature height (meter) 0.06 - 0.3
Root system -
Rooting depth (meter) -
Root diameter (meter) -
Flower color -
Blooming months
JanFebMar
AprMayJun
JulAugSep
OctNovDec
Fruit color -
Fruiting months -
Nitrogen fixer -
Photosynthetic pathway -

Environment

Light -
Soil humidity -
Soil texture 5-6
Soil acidity -
Soil nutriment -
Hardiness (USDA) 5-10

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 -

Distribution

Senecio dubitabilis world distribution map, present in Belarus, China, India, Kazakhstan, Kyrgyzstan, Liberia, Mongolia, Pakistan, Russian Federation, Tajikistan, and Uzbekistan

Identifiers

LSID urn:lsid:ipni.org:names:907702-1
WFO ID wfo-0000137259
COL ID 4WKLK
BDTFX ID -
INPN ID -
Wikipedia (EN)
Wikipedia (FR)

Synonyms

Senecio dubius Senecio dubitabilis var. dubitabilis Senecio coronopifolius var. discoidea Senecio vulgaris var. dubius Senecio dubitabilis Senecio dubitabilis var. linearifolius Senecio dubitabilis var. densicapitatus