Askellia pygmaea (Ledeb.) Sennikov

Species

Angiosperms > Asterales > Asteraceae > Askellia

Characteristics

Herbs 2-4 cm tall, perennial, glabrous, glaucescent. Roots shoot-bearing; subterranean shoots slender, often branched. Stem delicate, branched from base, leafy. Basal and stem leaves with a 4-14 mm petiole; leaf blade ovate, orbicular, or elliptic, 1-2.6[-3.5] × 0.4-1[-1.7] cm, base cuneate, margin entire, apex rounded to acute. Synflorescence tufted-corymbiform, with few to many capitula. Capitula with 9-11 florets; peduncle filiform, most shorter than involucre. Involucre narrowly cylindric, 9-10 × 2-3 mm. Phyllaries green, abaxially glabrous, margin scarious; outer phyllaries ovate to lanceolate, longest 2-3 mm, apex acute; inner phyllaries 8, apex ± acute. Florets yellow. Corolla 7-9 mm. Anther tube 2-2.5 mm. Achene pale yellowish, columnar to fusiform, ca. 5 mm, apically more strongly attenuate. Pappus 4-5 mm. Fl. and fr. Jun-Sep. 2n = 14.
Life form perennial
Growth form herb
Growth support free-standing
Foliage retention deciduous
Sexuality hermaphrodite
Pollination -
Spread -
Mature width (meter) -
Mature height (meter) 0.1 - 0.2
Root system creeping-root rhizome tap-root
Rooting depth (meter) -
Root diameter (meter) -
Flower color
Blooming months
JanFebMar
AprMayJun
JulAugSep
OctNovDec
Fruit color -
Fruiting months
JanFebMar
AprMayJun
JulAugSep
OctNovDec
Nitrogen fixer -
Photosynthetic pathway -

Environment

Light 7-9
Soil humidity 3-5
Soil texture 3-4
Soil acidity -
Soil nutriment -
Hardiness (USDA) 4-10

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 -

Images

Askellia pygmaea unspecified picture

Distribution

Askellia pygmaea world distribution map, present in Canada, China, and United States of America

Identifiers

LSID urn:lsid:ipni.org:names:77099951-1
WFO ID wfo-0000049044
COL ID 685VQ
BDTFX ID -
INPN ID -
Wikipedia (EN) Link
Wikipedia (FR)

Synonyms

Crepis cochlearifolia Askellia nana Youngia nana Crepis nana Prenanthes polymorpha Youngia pygmaea Barkhausia nana Crepis humilis Hieraciodes nana Youngia nana Askellia pygmaea Barkhausia nana var. flaccida Youngia pygmaea var. lyrata Youngia pygmaea var. pygmaea Barkhausia nana var. nana Youngia pygmaea var. flaccida Youngia pygmaea var. nana Crepis nana subsp. ramosa Crepis nana subsp. nana Prenanthes polymorpha var. lyrata Askellia nana subsp. ramosa Crepis nana var. ramosa Crepis nana var. nana Prenanthes polymorpha var. flaccida Crepis nana var. lyratifolia Prenanthes polymorpha var. integrifolia Prenanthes polymorpha var. polymorpha Askellia nana subsp. nana Prenanthes pygmaea Crepis nana subsp. clivicola Askellia pygmaea subsp. ramosa