Youngia racemifera (Hook.F.) Babc. & Stebbins

Species

Angiosperms > Asterales > Asteraceae > Youngia

Characteristics

Herbs 20-70 cm tall, perennial, with a ?rhizome or ?shoot-bearing roots. Stem solitary, erect, unbranched or with simple branches from ca. middle third, glabrous, usually leafy. Basal and lower stem leaves ovate, triangular-ovate, or lanceolate, 5-15 × 1-5 cm, glabrous, base attenuate or contracted into a 3-9 cm, broadly and long or narrowly and short cuneately winged petiole-like portion, margin ± mucronulately sinuate-dentate, apex acute to acuminate. Middle and upper stem leaves narrowly ovate, lanceolate, or linear-lanceolate, gradually smaller upward on stem, base attenuate into a gradually shorter cuneately winged petiole-like portion, apex acuminate to long acuminate, otherwise similar to basal leaves. Synflorescence of stem and branches secundly racemiform (occasionally of stem narrowly paniculiform), with few to many drooping capitula. Capitula with 10-20 florets; peduncle wiry, usually 0.2-2 cm. Involucre narrowly campanulate, 1-1.3 cm. Phyllaries abaxially usually glabrous; outer phyllaries narrowly triangular to lanceolate, longest 1/4-1/3 as long as inner ones, apex obtuse to acute; inner phyllaries 8-10, midvein of single phyllaries subapically sometimes crested and/or corniculate, apex acute to obtuse and pale brownish ciliate. Anther tube yellow. Style strongly exserted, greenish black upon drying. Achene brown, ± cylindric, 4-5 mm, with 5 main ribs and 2 or 3 secondary ribs in between but otherwise ± smooth, apex truncate. Pappus yellowish to pale brown, 7-9 mm. Fl. and fr. Aug-Sep.
Life form perennial
Growth form herb
Growth support -
Foliage retention -
Sexuality hermaphrodite
Pollination -
Spread -
Mature width (meter) -
Mature height (meter) 0.2 - 0.7
Root system rhizome
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) 7-11

Usage

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

Cultivation

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

Distribution

Youngia racemifera world distribution map, present in Bhutan, China, India, and Nepal

Identifiers

LSID urn:lsid:ipni.org:names:261153-1
WFO ID wfo-0000024405
COL ID 5CSHC
BDTFX ID -
INPN ID -
Wikipedia (EN)
Wikipedia (FR)

Synonyms

Youngia racemifera Crepis racemifera Faberia racemifera Crepis rapunculoides