Dig deeper at SERNEC, a consortium of southeastern herbaria.
Read more about Silphium at Vascular Plants of North Carolina.
Spermatophytes (seed plants): Angiosperms (flowering plants): Eudicots: Core Eudicots: Asterids: Campanulids: Asterales
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)
Silphium asteriscus
INCLUDING
Manual of the Southeastern Flora (Small, 1933)
Silphium scaberrimum
COMMON NAME:
Starry Rosinweed
Click or hover over the thumbnails to see larger pictures.
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.
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.
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.
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.
COMPARE
involucral bracts of Silphium
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.