Helianthus pauciflorus subsp. subrhomboideus (Rydb.) O.Spring & E.E.Schill.

Stiff sunflower (en)

Subspecies

Angiosperms > Asterales > Asteraceae > Helianthus > Helianthus pauciflorus

Characteristics

Plants 50–120 cm. Leaves opposite; blades rhombic-ovate to lance-linear, 5–12 cm, apices acute or obtuse.

Life form	perennial
Growth form	herb
Growth support	-
Foliage retention	deciduous
Sexuality	hermaphrodite
Pollination	-
Spread	-
Mature width (meter)	-
Mature height (meter)	0.5 - 1.2
Root system	-
Rooting depth (meter)	-
Root diameter (meter)	-
Flower color
Blooming months	Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
Fruit color	-
Fruiting months	-
Nitrogen fixer	-
Photosynthetic pathway	-

Environment

Light
Soil humidity
Soil texture	-
Soil acidity	-
Soil nutriment	-
Hardiness (USDA)

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

Identifiers

LSID	urn:lsid:ipni.org:names:1070491-2
WFO ID	wfo-0000108948
COL ID	5HM5B
BDTFX ID	-
INPN ID	-
Wikipedia (EN)
Wikipedia (FR)

Synonyms

Helianthus subrhomboideus Helianthus x var. subrhomboideus Helianthus rigidus subsp. laetiflorus Helianthus pauciflorus var. subrhomboideus Helianthus rigidus var. subrhomboideus Helianthus rigidus subsp. subrhomboideus Helianthus pauciflorus subsp. subrhomboideus Helianthus laetiflorus var. subrhomboideus