OF THE CAROLINAS & GEORGIA

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

WEAKLEY'S FLORA OF THE SOUTHEASTERN US (4/24/22):
Silphium connatum   FAMILY Asteraceae   Go to FSUS key



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

SYNONYMOUS WITH Flora of North America north of Mexico, vol. 19-20-21 (2006)

Silphium perfoliatum var. connatum

SYNONYMOUS WITH VASCULAR FLORA OF THE CAROLINAS (Radford, Ahles, & Bell, 1968) 179-54-001?:

Silphium connatum   FAMILY Asteraceae

 

COMMON NAME:
Virginia Cup-plant


         To see larger pictures, click or hover over the thumbnails.

image of Silphium connatum, Virginia Cup-plant

JK Marlow    jkm060711_045

July    Fayette County    WV

Creekside/Riverside

Stem square, and spreading-hispid (rarely nearly glabrous), per Weakley's Flora (2023).

image of Silphium connatum, Virginia Cup-plant

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, Virginia Cup-plant

JK Marlow    jkm060711_067

July    Fayette County    WV

Creekside/Riverside

Flower heads with usually around 8 or 13 rays, per Weakley's Flora (2023).

image of Silphium connatum, Virginia Cup-plant

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, Virginia Cup-plant

JK Marlow    jkm060711_076

July    Fayette County    WV

Creekside/Riverside

image of Silphium connatum, Virginia Cup-plant

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, Virginia Cup-plant

JK Marlow    jkm060711_083

July    Fayette County    WV

Creekside/Riverside

image of Silphium connatum, Virginia Cup-plant

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 (Radford, Ahles, & Bell, 1968).


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

 

 

WEAKLEY'S FLORA OF THE SOUTHEASTERN US (4/24/22):
Silphium connatum   FAMILY Asteraceae

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

SYNONYMOUS WITH Flora of North America north of Mexico, vol. 19-20-21
Silphium perfoliatum var. connatum

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

 

Find by SCIENTIFIC NAME:

2124

Forb
Perennial

Habitat: floodplain forests and openings, per Weakley's Flora

Native to North Carolina

Uncommon in NC

map
CLICK HERE to see a map, notes, and images from Weakley's Flora of the Southeastern US.

LEAVES:
Simple
Opposite (connate-perfoliate)

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

FRUIT:
Summer
Achene

 

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



 


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