Native & Naturalized Plants of the Carolinas & Georgia


1384

Forb
Perennial

Native
Documented growing wild in (GA) (NC) (SC)

map
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partial shade ...Variable ...Dry

LEAVES:
Simple
Opposite, rarely alternate (basal leaves absent at flowering)

FLOWER:
Summer/Fall
Rays: Yellow
Disc: Yellow
Disc flowers functionally staminate/ Ray flowers pistillate & fertile
Flower heads with 8-20 ray flowers, notched at apex
Inferior ovary

FRUIT:
Summer/Fall
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 (5/21/15):
Silphium asteriscus var. asteriscus   FAMILY Asteraceae

SYNONYMOUS WITH PLANTS NATIONAL DATABASE:
Silphium asteriscus var. asteriscus   FAMILY Asteraceae

GREATER THAN VASCULAR FLORA OF THE CAROLINAS (1968) 179-54-005:
Silphium asteriscus   FAMILY Asteraceae

GREATER THAN Vascular Flora of the Carolinas
Silphium dentatum var. gatesii

 

COMMON NAME:
Starry Rosinweed


Click or hover over the thumbnails to see larger pictures.

image of Silphium asteriscus var. asteriscus

Wesley Burnett    gwb070528_0625

May    Laurens County    SC

Sumter National Forest: Tyger Ranger District

Ray florets 8-20 per head, per Flora of North America.

image of Silphium asteriscus var. asteriscus

JK Marlow    jkm070528_002

May    Laurens County    SC

Sumter National Forest: Tyger Ranger District

Leaf surfaces scabrous to hispid, basal leaves caducous at flowering, per Weakley's Flora.

image of Silphium asteriscus var. asteriscus

JK Marlow    jkm070528_008

May    Laurens County    SC

Sumter National Forest: Tyger Ranger District

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

image of Silphium asteriscus var. asteriscus

JK Marlow    jkm080608_012

June    Greenville County    SC

Lake Conestee Nature Park

image of Silphium asteriscus var. asteriscus

JK Marlow    jkm080611_001

June    Greenville County    SC

Lake Conestee Nature Park

image of Silphium asteriscus var. asteriscus

JK Marlow    jkm080611_003

June    Greenville County    SC

Lake Conestee Nature Park

image of Silphium asteriscus var. asteriscus

JK Marlow    jkm080611_005

June    Greenville County    SC

Lake Conestee Nature Park

Rows of large recurved bracts beneath the disc form a cup-like shape, per All About South Carolina Wildflowers.


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

image of Silphium asteriscus var. asteriscus

JK Marlow    jkm080611_008

June    Greenville County    SC

Lake Conestee Nature Park

image of Silphium asteriscus var. asteriscus

JK Marlow    jkm080611_008b

June    Greenville County    SC

Lake Conestee Nature Park

Involucral bracts ciliate, glabrous or pubescent on the backs, per Vascular Flora of the Carolinas.

image of Silphium asteriscus var. asteriscus

JK Marlow    jkm0408k_15

August    Oconee County    SC

image of Silphium asteriscus var. asteriscus

Richard and Teresa Ware    rtw_s_asteriscus_asteri_6

August        

image of Silphium asteriscus var. asteriscus

Richard and Teresa Ware    rtw_s_asteriscus_asteri_8

August