Arnica cernua Howell

Serpentine arnica (en)

Species

Angiosperms > Asterales > Asteraceae > Arnica

Characteristics

Plants 10–30 cm. Stems (often reddish purple) mostly simple. Leaves 3–4 pairs, mostly cauline (basal often persistent on sterile rosettes); petiolate (petioles usually narrow, proximalmost sometimes broadly winged); blades (often reddish purple) usually elliptic to ovate, sometimes subcordate, 1.5–8 × 1.5–4 cm (often relatively thick, nearly succulent), margins usually entire or serrate, sometimes crenate or slightly lobed, apices acute to rounded, faces glabrous or scabrous. Heads usually 1, sometimes 2–3 (often nodding in bud). Involucres campanulate-turbinate. Phyllaries 8–14, ovate to broadly lanceolate. Ray florets 5–10; corollas yellow to slightly orange. Disc florets: corollas yellow; anthers yellow. Cypselae dark gray, 6–8 mm, sparsely to densely hirsute (hairs duplex); pappi white, bristles usually barbellate, sometimes subplumose. 2n = 38.
Life form perennial
Growth form herb
Growth support free-standing
Foliage retention -
Sexuality hermaphrodite
Pollination -
Spread -
Mature width (meter) -
Mature height (meter) 0.1 - 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 7-9
Soil humidity 3-7
Soil texture 3-4
Soil acidity -
Soil nutriment -
Hardiness (USDA) -

Usage

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

Cultivation

Mode -
Germination duration (days) 25 - 30
Germination temperacture (C°) 12
Germination luminosity -
Germination treatment -
Minimum temperature (C°) -
Optimum temperature (C°) -
Size -
Vigor -
Productivity -

Distribution

Arnica cernua world distribution map, present in United States of America

Identifiers

LSID urn:lsid:ipni.org:names:60440714-2
WFO ID wfo-0000064902
COL ID GT36
BDTFX ID -
INPN ID -
Wikipedia (EN) Link
Wikipedia (FR)

Synonyms

Arnica chandleri Arnica cernua