Youngia longipes (Hemsl.) Babc. & Stebbins

Species

Angiosperms > Asterales > Asteraceae > Youngia

Characteristics

Herbs 80-100 cm tall, annual. Stem erect, branched from middle third or higher, glabrous, distantly leafy. Basal leaves with petiole to 15 cm; leaf blade cordate-hastate to sometimes ovate, to 15 × 5 cm, glabrous, margin sinuate-denticulate, apex acute, obtuse, or rounded. Stem leaves with gradually shorter petiole upwardly on stem, leaf blade smaller than in basal leaves and otherwise similar or lyrately pinnatisect; lateral lobes 1 or 2 pairs, alternate, narrowly ovate; terminal lobe broadly triangular, apex acuminate; uppermost leaves linear-lanceolate, reduced in size. Synflorescence paniculiform-corymbiform, with many capitula. Capitula with 15-20 florets. Involucre cylindric, 5-6 mm. Phyllaries abaxially glabrous; outer phyllaries ovate, longest less than ca. 1 mm, apex acute; inner phyllaries 8, adaxially appressed pubescent, midvein subapically plane, margin narrowly white scarious, apex acute. Achene pale red, finely mottled with yellow, fusiform, ca. 2 mm, ribs apically finely spiculate, apex strongly attenuate. Pappus white, ca. 4 mm. Fl. and fr. Jun.
Life form annual
Growth form herb
Growth support -
Foliage retention -
Sexuality hermaphrodite
Pollination -
Spread -
Mature width (meter) -
Mature height (meter) 0.8 - 1.0
Root system -
Rooting depth (meter) -
Root diameter (meter) -
Flower color -
Blooming months -
Fruit color -
Fruiting months
JanFebMar
AprMayJun
JulAugSep
OctNovDec
Nitrogen fixer -
Photosynthetic pathway -

Environment

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

Usage

Uses -
Edible -
Therapeutic use -
Human toxicity -
Animal toxicity -

Cultivation

Mode -
Germination duration (days) -
Germination temperacture (C°) -
Germination luminosity -
Germination treatment -
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Optimum temperature (C°) -
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Vigor -
Productivity -

Distribution

Youngia longipes world distribution map, present in China

Identifiers

LSID urn:lsid:ipni.org:names:261138-1
WFO ID wfo-0000087083
COL ID 5CSGN
BDTFX ID -
INPN ID -
Wikipedia (EN)
Wikipedia (FR)

Synonyms

Crepis longipes Youngia longipes