OF THE CAROLINAS & GEORGIA

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

WEAKLEY'S FLORA (2/8/20):
Silphium asteriscus var. asteriscus   FAMILY Asteraceae   NEW! Click to go to FSUS key


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

INCLUDING VASCULAR FLORA OF THE CAROLINAS (Radford, Ahles, & Bell, 1968) 179-54-005:
Silphium asteriscus   FAMILY Asteraceae

INCLUDING Vascular Flora of the Carolinas (Radford, Ahles, & Bell, 1968)
Silphium dentatum var. gatesii

SYNONYMOUS WITH Britton & Brown Illus Flora of Northeast US & adjacent Canada (Gleason, 1952)
Silphium asteriscus

INCLUDING Manual of the Southeastern Flora (Small, 1933, 1938)
Silphium asteriscus

INCLUDING Manual of the Southeastern Flora (Small, 1933, 1938)
Silphium scaberrimum

 

COMMON NAME:
Starry Rosinweed


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

image of Silphium asteriscus var. asteriscus, Starry Rosinweed

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, Starry Rosinweed

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, Starry Rosinweed

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, Starry Rosinweed

JK Marlow    jkm080608_012

June    Greenville County    SC

Lake Conestee Nature Park

image of Silphium asteriscus var. asteriscus, Starry Rosinweed

JK Marlow    jkm080611_001

June    Greenville County    SC

Lake Conestee Nature Park

image of Silphium asteriscus var. asteriscus, Starry Rosinweed

JK Marlow    jkm080611_003

June    Greenville County    SC

Lake Conestee Nature Park

image of Silphium asteriscus var. asteriscus, Starry Rosinweed

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, Starry Rosinweed

JK Marlow    jkm080611_008

June    Greenville County    SC

Lake Conestee Nature Park

image of Silphium asteriscus var. asteriscus, Starry Rosinweed

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, Starry Rosinweed

JK Marlow    jkm0408k_15

August    Oconee County    SC

image of Silphium asteriscus var. asteriscus, Starry Rosinweed

Richard and Teresa Ware    rtw_s_asteriscus_asteri_6

August        

image of Silphium asteriscus var. asteriscus, Starry Rosinweed

Richard and Teresa Ware    rtw_s_asteriscus_asteri_8

August        

 

WEAKLEY'S FLORA (2/8/20):
Silphium asteriscus var. asteriscus   FAMILY Asteraceae

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

INCLUDING VASCULAR FLORA OF THE CAROLINAS (Radford, Ahles, & Bell, 1968) 179-54-005:
Silphium asteriscus   FAMILY Asteraceae

INCLUDING Vascular Flora of the Carolinas (Radford, Ahles, & Bell, 1968)
Silphium dentatum var. gatesii

SYNONYMOUS WITH Britton & Brown Illus Flora of Northeast US & adjacent Canada (Gleason, 1952)
Silphium asteriscus

INCLUDING Manual of the Southeastern Flora (Small, 1933, 1938)
Silphium asteriscus

INCLUDING Manual of the Southeastern Flora (Small, 1933, 1938)
Silphium scaberrimum

 

Find by SCIENTIFIC NAME:

1384

Forb
Perennial

Native

Common in NC Piedmont, uncommon in NC Mountains, rare elsewhere in GA-NC-SC

Habitat: 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
Opposite, or rarely alternate (basal leaves absent or withered 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!



 


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