Spermatophytes (seed plants): Angiosperms (flowering plants): Eudicots: Core Eudicots: Asterids: Campanulids: Asterales
WEAKLEY'S FLORA OF THE SOUTHEASTERN US (4/14/23):
Silphium simpsonii
FAMILY
Asteraceae
Go to FSUS key
Dig deeper at SERNEC, a consortium of southeastern herbaria.
SYNONYMOUS WITH
PLANTS NATIONAL DATABASE:
Silphium simpsonii
FAMILY
Asteraceae
SYNONYMOUS WITH Floristic Synthesis of North America. BONAP (Kartesz, 2021)
Silphium asteriscus var. simpsonii
SYNONYMOUS WITH Flora of North America north of Mexico, vol. 19-20-21 (2006)
Silphium asteriscus var. simpsonii
SYNONYMOUS WITH Floristic Synthesis of North America (Kartesz, 1999)
Silphium simpsonii
INCLUDED WITHIN (MISAPPLIED) Manual of the Southeastern Flora (Small, 1933, 1938)
Silphium gracile
COMMON NAME:
Simpson's rosinweed
NameThatPlant has no pictures at this time. You might try this link: Flora of the Southeastern United States
WEAKLEY'S FLORA OF THE SOUTHEASTERN US (4/14/23):
Silphium simpsonii
FAMILY
Asteraceae
SYNONYMOUS WITH
PLANTS NATIONAL DATABASE:
Silphium simpsonii
FAMILY
Asteraceae
SYNONYMOUS WITH
Floristic Synthesis of North America. BONAP (Kartesz, 2021)
Silphium asteriscus var. simpsonii
SYNONYMOUS WITH
Flora of North America north of Mexico, vol. 19-20-21
Silphium asteriscus var. simpsonii
SYNONYMOUS WITH
Floristic Synthesis of North America (Kartesz, 1999)
Silphium simpsonii
INCLUDED WITHIN (MISAPPLIED)
Manual of the Southeastern Flora (Small, 1933, 1938)
Silphium gracile
3791
Forb
Perennial
Habitat: Longleaf pinelands, per Weakley's Flora
Native to South Carolina & Georgia
Uncommon in GA, rare in SC
CLICK HERE to see a map, notes, and images from Weakley's Flora of the Southeastern US.
LEAVES:
Simple
Opposite or alternate (basal leaves persistent)
FLOWER:
Summer/Fall
Rays: Yellow
Disc: Yellow
Flower heads with 10-15(20) ray flowers, notched at apex
Inferior ovary
Disc flowers functionally staminate/ Ray flowers pistillate & fertile
FRUIT:
Summer/Fall
Achene
TO LEARN MORE about this plant, look it up in a good book!
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".