Packera macounii (Greene) W.A.Weber & Á.Löve

Siskiyou mountain ragwort (en)

Species

Angiosperms > Asterales > Asteraceae > Packera

Characteristics

Perennials, 30–40+ cm; taprooted (caudices ± branched, becoming rhizomiform). Stems 1, sparsely to densely tomentose or glabrescent. Basal leaves (and proximal) petiolate; blades lanceolate to oblanceolate, 30–50+ × 10–20 mm, bases tapering, margins entire or shallowly toothed (slightly revolute). Cauline leaves gradually reduced (distal sessile, bractlike). Heads 6–15+ in corymbiform arrays. Peduncles inconspicuously bracteate or ebracteate, sparsely tomentose to glabrate. Calyculi 0 or inconspicuous. Phyllaries 13 or 21, green, 5–7+ mm, glabrous. Ray florets 8(–13); corolla laminae 8–10+ mm. Disc florets 30–40+; corolla tubes 2.5–3.5 mm, limbs 2–3 mm. Cypselae 1.5–2 mm, glabrous; pappi 4–5 mm. 2n = 46, 92.
Life form perennial
Growth form herb
Growth support free-standing
Foliage retention -
Sexuality hermaphrodite
Pollination -
Spread -
Mature width (meter) -
Mature height (meter) 0.3 - 0.4
Root system tap-root
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 -
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 -

Distribution

Packera macounii world distribution map, present in Canada and United States of America

Identifiers

LSID urn:lsid:ipni.org:names:179998-2
WFO ID wfo-0000031443
COL ID 4BW9N
BDTFX ID -
INPN ID -
Wikipedia (EN) Link
Wikipedia (FR)

Synonyms

Senecio spatulifolius Senecio leucocrinus Senecio fastigiatus Senecio macounii Packera macounii Senecio ligulifolius Senecio fastigiatus subsp. fastigiatus Senecio fastigiatus subsp. macounii