Native & Naturalized Plants of the Carolinas & Georgia


2124

Forb
Perennial

Native to North Carolina
Documented growing wild in - NC -

Uncommon

Look for it in floodplain forests & openings, per Weakley's Flora

map
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full sun partial shade ...Wet ...Moist

LEAVES:
Simple
Opposite (connate-perfoliate)

FLOWER:
Summer
Rays: Yellow
Disc: Yellow
Disc flowers functionally staminate/ Ray flowers pistillate & fertile
Flower heads with usually around 8 or 13 rays, notched at apex
Inferior ovary

FRUIT:
Summer
Achene

 

TO LEARN MORE about this plant, look it up in a good book!



Spermatophytes (seed plants): Angiosperms (flowering plants): Eudicots: Core Eudicots: Asterids: Campanulids: Asterales

WEAKLEY'S FLORA (11/30/12):
Silphium connatum   FAMILY Asteraceae

SYNONYMOUS WITH PLANTS NATIONAL DATABASE:
Silphium perfoliatum var. connatum   FAMILY Asteraceae

SYNONYMOUS WITH VASCULAR FLORA OF THE CAROLINAS (1968) 179-54-001?:
Silphium connatum   FAMILY Asteraceae

 

COMMON NAME:
Virginia Cup-plant


Click or hover over the thumbnails to see larger pictures.

image of Silphium connatum

JK Marlow    jkm060711_045

July    Fayette County    WV

Creekside/Riverside

Stem square, and spreading-hispid (rarely nearly glabrous), per Weakley's Flora.

image of Silphium connatum

JK Marlow    jkm060711_053

July    Fayette County    WV

Creekside/Riverside

Variety connatum is known only from New River Valley, per Flora of North America.

image of Silphium connatum

JK Marlow    jkm060711_067

July    Fayette County    WV

Creekside/Riverside

Flower heads with usually around 8 or 13 rays, per Weakley's Flora.

image of Silphium connatum

JK Marlow    jkm060711_074

July    Fayette County    WV

Creekside/Riverside

Upper leaves connate, fused basally, the stem thus perfoliate, per Weakley's Flora.

image of Silphium connatum

JK Marlow    jkm060711_076

July    Fayette County    WV

Creekside/Riverside

image of Silphium connatum

JK Marlow    jkm060711_079

July    Fayette County    WV

Creekside/Riverside

Stem with many leaves, leaves similar in size, the upper leaves fused basally, per Weakley's Flora.

image of Silphium connatum

JK Marlow    jkm060711_083

July    Fayette County    WV

Creekside/Riverside

image of Silphium connatum

JK Marlow    jkm060711_085

July    Fayette County    WV

Creekside/Riverside

Involucral bracts of the genus Silphium are wide and usually squarrose, per Vascular Flora of the Carolinas.


click here to see other plants that look similar to this COMPARE involucral bracts of Silphium