Silphium perfoliatum var. connatum (L.) Cronquist

Cup plant (en)

Variety

Angiosperms > Asterales > Asteraceae > Silphium > Silphium perfoliatum

Characteristics

Stem usually spreading-hispid, varying to largely glabrous; many or most of the lvs sessile, only the lower or lowermost ones evidently petiolate; lower lf-surface, at least along the midrib, relatively long-hairy; heads with fewer (mostly ca 8 or ca 13) rays; invol usually finely hairy, varying to glabrous; scattered stations in the mts. and adj. piedmont of Va., W.Va., and N.C. (S. connatum)
Life form perennial
Growth form herb
Growth support -
Foliage retention deciduous
Sexuality hermaphrodite
Pollination entomogamy
Spread -
Mature width (meter) -
Mature height (meter) 0.75 - 3.0
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 4-6
Soil humidity 5-7
Soil texture 1-4
Soil acidity -
Soil nutriment -
Hardiness (USDA) 4-9

Usage

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

Cultivation

Mode -
Germination duration (days) 84
Germination temperacture (C°) 4
Germination luminosity -
Germination treatment -
Minimum temperature (C°) -33
Optimum temperature (C°) -
Size -
Vigor -
Productivity -

Distribution

Silphium perfoliatum var. connatum world distribution map, present in United States of America

Identifiers

LSID urn:lsid:ipni.org:names:236464-2
WFO ID wfo-0000106602
COL ID 5RJ2X
BDTFX ID 64449
INPN ID 123700
Wikipedia (EN)
Wikipedia (FR)

Synonyms

Silphium connatum Silphium perfoliatum var. connatum Silphium perfoliatum subsp. connatum