Rudbeckia hirta var. angustifolia (T.V.Moore) Perdue

Blackeyed susan (en)

Variety

Angiosperms > Asterales > Asteraceae > Rudbeckia > Rudbeckia hirta

Characteristics

Annuals, biennials, or perennials. Stems branched mostly at or near mid heights, leafy toward bases. Leaves: basal blades oblanceolate, 0.5–2.5 cm wide; cauline narrowly elliptic (smaller distally); margins entire or serrate; faces hispid to ± sericeous. Peduncles at least 1/2 plant heights. 2n = 38.
Life form
Growth form herb
Growth support -
Foliage retention deciduous
Sexuality hermaphrodite
Pollination entomogamy
Spread anemochory
Mature width (meter) -
Mature height (meter) 0.3 - 0.9
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 4-9
Soil humidity 3-5
Soil texture 3-4
Soil acidity -
Soil nutriment -
Hardiness (USDA) 4-10

Usage

Uses -
Edible -
Therapeutic use Analgesic (flower), Febrifuge (flower)
Human toxicity -
Animal toxicity -

Cultivation

Mode -
Germination duration (days) -
Germination temperacture (C°) -
Germination luminosity light
Germination treatment stratification
Minimum temperature (C°) -35
Optimum temperature (C°) -
Size -
Vigor -
Productivity -

Distribution

Rudbeckia hirta var. angustifolia world distribution map, present in United States of America

Identifiers

LSID urn:lsid:ipni.org:names:223741-2
WFO ID wfo-0000049875
COL ID 5R9LY
BDTFX ID -
INPN ID -
Wikipedia (EN)
Wikipedia (FR)

Synonyms

Rudbeckia divergens Rudbeckia hirta var. angustifolia Rudbeckia floridana var. angustifolia