Helianthus pauciflorus subsp. pauciflorus Nutt.

Stiff sunflower (en)

Subspecies

Angiosperms > Asterales > Asteraceae > Helianthus > Helianthus pauciflorus

Characteristics

A perennial hermaphrodite deciduous herb. It grows 1.3-2m high.
Life form perennial
Growth form herb
Growth support free-standing
Foliage retention deciduous
Sexuality hermaphrodite
Pollination -
Spread -
Mature width (meter) 1.25 - 2.0
Mature height (meter) 1.3 - 2.0
Root system rhizome
Rooting depth (meter) -
Root diameter (meter) 0.5
Flower color
Blooming months
JanFebMar
AprMayJun
JulAugSep
OctNovDec
Fruit color -
Fruiting months -
Nitrogen fixer -
Photosynthetic pathway -

Environment

Light 5-9
Soil humidity -
Soil texture -
Soil acidity 4-8
Soil nutriment -
Hardiness (USDA) 7-9

Usage

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

Cultivation

Can be grown by divisions or seedlings.
Mode divisions seedlings
Germination duration (days) 10 - 14
Germination temperacture (C°) 5
Germination luminosity -
Germination treatment -
Minimum temperature (C°) -
Optimum temperature (C°) -
Size -
Vigor -
Productivity -

Distribution

Helianthus pauciflorus subsp. pauciflorus world distribution map, present in Austria, Canada, Czech Republic, Spain, France, Croatia, Hungary, India, Italy, Liechtenstein, Lithuania, Norway, Serbia, Slovakia, Ukraine, and United States of America

Identifiers

LSID urn:lsid:ipni.org:names:77179852-1
WFO ID wfo-0000109815
COL ID 5HM59
BDTFX ID 30852
INPN ID 100752
Wikipedia (EN)
Wikipedia (FR)

Synonyms

Helianthus x laetiflorus f. rigidus Helianthus crassifolius Helianthus atrorubens Helianthus asper Helianthus rigidus Helianthus pedunculatus Helianthus missouriensis Harpalium rigidum Helianthus diffusus Helianthus diffusus var. diffusus Helianthus pauciflorus subsp. pauciflorus Helianthus x var. rigidus Helianthus laetiflorus var. rigidus