Erigeron rydbergii Cronquist

Rydberg's fleabane (en)

Species

Angiosperms > Asterales > Asteraceae > Erigeron

Characteristics

Perennials, 2.5–6 cm; taprooted, caudex branches relatively short, thick. Stems erect, finely hirsutulous to villosulous, eglandular. Leaves mostly basal (persistent); blades linear-oblanceolate to narrowly spatulate, 10–50 × 1–3 mm, cauline mostly on proximal 1 / 2 of stems, reduced distally, margins entire (apices obtuse to rounded), abaxial faces glabrous, adaxial glabrous or sparsely villous, eglandular. Heads 1. Involucres 5–6 × 7–12 mm. Phyllaries in 2–3 series, densely and finely hirsuto-villous (hairs without colored cross walls), minutely and inconspicuously glandular. Ray florets 15–35; corollas usually bluish to purplish, rarely white, 6–9 mm, laminae coiling. Disc corollas 3.7–5 mm. Cypselae 1.8–2 mm, 2-nerved, faces sparsely strigose; pappi: outer of setae, inner of 15–20 bristles.
Life form perennial
Growth form herb
Growth support free-standing
Foliage retention -
Sexuality hermaphrodite
Pollination -
Spread -
Mature width (meter) -
Mature height (meter) 0.02 - 0.06
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 7-9
Soil humidity 1-5
Soil texture 3-4
Soil acidity -
Soil nutriment -
Hardiness (USDA) 4-9

Usage

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

Cultivation

Mode -
Germination duration (days) 15 - 20
Germination temperacture (C°) -
Germination luminosity -
Germination treatment -
Minimum temperature (C°) -
Optimum temperature (C°) -
Size -
Vigor -
Productivity -

Distribution

Erigeron rydbergii world distribution map, present in United States of America

Identifiers

LSID urn:lsid:ipni.org:names:94102-2
WFO ID wfo-0000074718
COL ID 6H26T
BDTFX ID -
INPN ID -
Wikipedia (EN) Link
Wikipedia (FR)

Synonyms

Erigeron rydbergii