OF THE CAROLINAS & GEORGIA

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

WEAKLEY'S FLORA (4/24/22):
Silphium reniforme   FAMILY Asteraceae   NEW! Click to go to FSUS key


SYNONYMOUS WITH PLANTS NATIONAL DATABASE:
Silphium compositum var. reniforme   FAMILY Asteraceae

INCLUDED WITHIN Flora of North America
Silphium compositum

SYNONYMOUS WITH VASCULAR FLORA OF THE CAROLINAS (Radford, Ahles, & Bell, 1968) 179-54-002b:
Silphium compositum var. reniforme   FAMILY Asteraceae

SYNONYMOUS WITH Manual of the Southeastern Flora (Small, 1933, 1938)
Silphium reniforme

 

COMMON NAME:
Ragged Rosinweed, Kidneyleaf Rosinweed


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

image of Silphium reniforme, Ragged Rosinweed, Kidneyleaf Rosinweed

USDA-NRCS PLANTS Database / Britton, N.L., and A. Brown. 1913    pnd_sire9_001_lvd

        

image of Silphium reniforme, Ragged Rosinweed, Kidneyleaf Rosinweed

JK Marlow    jkm130718_448

July    McDowell County    NC

The hickory leaves provide an idea of scale.

image of Silphium reniforme, Ragged Rosinweed, Kidneyleaf Rosinweed

Will Stuart    wil_5984487318_1bf6dc0684

July    Burke County    NC

Table Rock

These basal leaves are huge, unlobed, and more than 25cm across. — Will Stuart

image of Silphium reniforme, Ragged Rosinweed, Kidneyleaf Rosinweed

Will Stuart    wil_5984487650_b0764288c

July    Burke County    NC

Table Rock

Heads relatively small (disk 8-15 mm wide), with 6-12 ray flowers, per Weakley's Flora.

image of Silphium reniforme, Ragged Rosinweed, Kidneyleaf Rosinweed

JK Marlow    jkm151024_573

October    Greenville County    SC

Blue Wall Preserve

Leaves unlobed, coarsely dentate, often to 40cm wide, per Vascular Flora of the Carolinas.

image of Silphium reniforme, Ragged Rosinweed, Kidneyleaf Rosinweed

JK Marlow    jkm151024_574

October    Greenville County    SC

Blue Wall Preserve

image of Silphium reniforme, Ragged Rosinweed, Kidneyleaf Rosinweed

JK Marlow    jkm151024_576

October    Greenville County    SC

Blue Wall Preserve

Bracts wide, usually squarrose, acute or obtuse, glabrous, ciliate or erose, per Vascular Flora of the Carolinas.


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

image of Silphium reniforme, Ragged Rosinweed, Kidneyleaf Rosinweed

JK Marlow    jkm151024_578

October    Greenville County    SC

Blue Wall Preserve

Leaves usually as wide as long or wider, per Vascular Flora of the Carolinas.

image of Silphium reniforme, Ragged Rosinweed, Kidneyleaf Rosinweed

JK Marlow    jkm151030_640b

October    Greenville County    SC

Blue Wall Preserve

Leaves usually pubescent, at least beneath, per Vascular Flora of the Carolinas.

image of Silphium reniforme, Ragged Rosinweed, Kidneyleaf Rosinweed

JK Marlow    jkm151030_641

October    Greenville County    SC

Blue Wall Preserve

 

WEAKLEY'S FLORA (4/24/22):
Silphium reniforme   FAMILY Asteraceae

SYNONYMOUS WITH PLANTS NATIONAL DATABASE:
Silphium compositum var. reniforme   FAMILY Asteraceae

INCLUDED WITHIN Flora of North America
Silphium compositum

SYNONYMOUS WITH VASCULAR FLORA OF THE CAROLINAS (Radford, Ahles, & Bell, 1968) 179-54-002b:
Silphium compositum var. reniforme   FAMILY Asteraceae

SYNONYMOUS WITH Manual of the Southeastern Flora (Small, 1933, 1938)
Silphium reniforme

 

Find by SCIENTIFIC NAME:

2113

Forb
Perennial

Native to the Carolinas & Georgia

Uncommon (rare in GA)

Habitat: Dry forests, woodlands, roadsides, per Weakley's Flora

map
NEW! Click here to see a map from Weakley's Flora of the Southeastern US showing range and abundance.

Click here to see a map showing all occurrences known to SERNEC, a consortium of southeastern herbaria. (Zoom in to see more detail.)

LEAVES:
Simple
Alternate

FLOWER:
Summer/Fall
Rays: Yellow
Disc: Yellow
Disc flowers functionally staminate/ Ray flowers pistillate & fertile
Flower heads with 6-12 ray flowers, notched at apex
Inferior ovary

FRUIT:
Summer/Fall
Achene

 

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



 


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