Helianthus petiolaris subsp. fallax Heiser

Prairie sunflower (en)

Subspecies

Angiosperms > Asterales > Asteraceae > Helianthus > Helianthus petiolaris

Characteristics

Stems usually ± hispid , rarely ± hir-sute to glabrate. Leaves: abaxial faces sparsely, if at all, gland-dotted. Peduncles usually with leafy bracts subtending heads. Phyllaries 2–3.5 mm wide. Disc corollas: throats gradually narrowed distal to slight, not densely hairy basal bulges. 2n = 34.
Life form annual
Growth form herb
Growth support -
Foliage retention deciduous
Sexuality hermaphrodite
Pollination entomogamy
Spread -
Mature width (meter) -
Mature height (meter) 0.4 - 2.0
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 -
Soil acidity -
Soil nutriment -
Hardiness (USDA) 4-11

Usage

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

Cultivation

Mode -
Germination duration (days) 10 - 14
Germination temperacture (C°) -
Germination luminosity -
Germination treatment -
Minimum temperature (C°) -
Optimum temperature (C°) -
Size -
Vigor -
Productivity -

Distribution

Helianthus petiolaris subsp. fallax world distribution map, present in Mexico and United States of America

Identifiers

LSID urn:lsid:ipni.org:names:119219-2
WFO ID wfo-0000097692
COL ID 5HM5C
BDTFX ID -
INPN ID -
Wikipedia (EN)
Wikipedia (FR)

Synonyms

Helianthus petiolaris subsp. fallax Helianthus petiolaris var. fallax