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
Dig deeper at SERNEC, a consortium of southeastern herbaria.
Read more about Virginia Cup-plant at Vascular Plants of North Carolina.
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.
)
JK Marlow jkm060711_045
July Fayette County WV
Creekside/Riverside
Stem square, and spreading-hispid (rarely nearly glabrous), per Weakley's Flora (2023).
)
JK Marlow jkm060711_053
July Fayette County WV
Creekside/Riverside
Variety connatum is known only from New River Valley, per Flora of North America.
)
JK Marlow jkm060711_067
July Fayette County WV
Creekside/Riverside
Flower heads with usually around 8 or 13 rays, per Weakley's Flora (2023).
)
JK Marlow jkm060711_074
July Fayette County WV
Creekside/Riverside
Upper leaves connate, fused basally, the stem thus perfoliate, per Weakley's Flora.
)
JK Marlow jkm060711_076
July Fayette County WV
Creekside/Riverside
)
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.
)
JK Marlow jkm060711_083
July Fayette County WV
Creekside/Riverside
)
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).
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
2124
Forb
Perennial
Habitat: floodplain forests and openings, per Weakley's Flora
Native to North Carolina
Uncommon in NC
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!
- Gardening with the Native Plants of Tennessee (Hunter, 2002) p172?
- Wildflowers of Tennessee (Carman, 2005) p325?
- Wildflowers of Tennessee, the Ohio Valley, and the Southern Appalachians (Horn, Cathcart, Hemmerly, & Duhl, 2005) p376?
If a search such as "Carex leptalea var. leptalea" doesn't deliver the results you want, try "Carex leptalea".
Or, to minimize chances of a misspelling, try just "Carex le".
Less is more: If "pencil flower" doesn't deliver the results you want, try "pencil".