OF THE CAROLINAS & GEORGIA

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

WEAKLEY'S FLORA OF THE SOUTHEASTERN US (4/14/23):
Silphium terebinthinaceum   FAMILY Asteraceae   Go to FSUS key



INCLUDING PLANTS NATIONAL DATABASE:
Silphium terebinthinaceum var. terebinthinaceum   FAMILY Asteraceae

SYNONYMOUS WITH Floristic Synthesis of North America. BONAP (Kartesz, 2021)

Silphium terebinthinaceum var. terebinthinaceum

INCLUDING (ORTHOGRAPHIC VARIANT Vascular flora of Illinois (Mohlenbrock, 2014)

Silphium terebinthinaceum var. lucy-brauniae

INCLUDING Vascular flora of Illinois (Mohlenbrock, 2014)

Silphium terebinthinaceum var. terebinthinaceum

SYNONYMOUS WITH Flora of North America north of Mexico, vol. 19-20-21 (2006)

Silphium terebinthinaceum var. terebinthinaceum

INCLUDING (ORTHOGRAPHIC VARIANT Floristic Synthesis of North America (Kartesz, 1999)

Silphium terebinthinaceum var. luciae-brauniae

INCLUDING Floristic Synthesis of North America (Kartesz, 1999)

Silphium terebinthinaceum var. terebinthinaceum

SYNONYMOUS WITH VASCULAR FLORA OF THE CAROLINAS (Radford, Ahles, & Bell, 1968) 179-54-003:

Silphium terebinthinaceum   FAMILY Asteraceae

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

Silphium rumicifolium

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

Silphium terebinthinaceum

INCLUDING [correct spelling]

Silphium terebinthinaceum var. lucybrauniae

 

COMMON NAME:
Prairie-dock, Broadleaf Prairie-dock


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

image of Silphium terebinthinaceum, Prairie-dock, Broadleaf Prairie-dock

USDA-NRCS PLANTS Database / Britton, N.L., and A. Brown. 1913    pnd_site_001_lvd

        

image of Silphium terebinthinaceum, Prairie-dock, Broadleaf Prairie-dock

USDA-NRCS PLANTS Database / USDA Wetland flora: Field office illustrated guide    pnd_site_005_lvd

        

image of Silphium terebinthinaceum, Prairie-dock, Broadleaf Prairie-dock

Alan S. Weakley    asw_144229951979688

May    Granville County    NC

Leaves basally disposed, the basal leaves large and persistent; leaf blade < 1.5× long as wide, per Weakley's Flora (2023).

image of Silphium terebinthinaceum, Prairie-dock, Broadleaf Prairie-dock

Alan S. Weakley    asw_974603873980377

May    Granville County    NC

image of Silphium terebinthinaceum, Prairie-dock, Broadleaf Prairie-dock

JK Marlow    jkm140603_383

June    Pickens County    SC

SC Botanical Garden

image of Silphium terebinthinaceum, Prairie-dock, Broadleaf Prairie-dock

Will Stuart    wil_3933315449_158f6ceda3

September    York County    SC

Blackjacks Heritage Preserve

17-29 ray florets; corollas of both ray and disc florets yellow, per Flora of North America.

image of Silphium terebinthinaceum, Prairie-dock, Broadleaf Prairie-dock

Richard and Teresa Ware    rtw_s_terebinthina_jr05_1

October        

image of Silphium terebinthinaceum, Prairie-dock, Broadleaf Prairie-dock

Richard and Teresa Ware    rtw_s_terebinthinaceum_3s

October        

image of Silphium terebinthinaceum, Prairie-dock, Broadleaf Prairie-dock

JK Marlow    jkm0411f_0304

November    York County    SC

Blackjacks Heritage Preserve

image of Silphium terebinthinaceum, Prairie-dock, Broadleaf Prairie-dock

JK Marlow    jkm0411f_07

November    York County    SC

Blackjacks Heritage Preserve

Leaves large, to 1' wide, mostly basal, with heart-shaped base & long stalk, per Wildflowers & Plant Communities of the Southern Appalachian Mountains and Piedmont (Spira, 2011).

image of Silphium terebinthinaceum, Prairie-dock, Broadleaf Prairie-dock

JK Marlow    jkm111112_335

November    York County    SC

Blackjacks Heritage Preserve

 

 

WEAKLEY'S FLORA OF THE SOUTHEASTERN US (4/14/23):
Silphium terebinthinaceum   FAMILY Asteraceae

INCLUDING PLANTS NATIONAL DATABASE:
Silphium terebinthinaceum var. terebinthinaceum   FAMILY Asteraceae

SYNONYMOUS WITH Floristic Synthesis of North America. BONAP (Kartesz, 2021)
Silphium terebinthinaceum var. terebinthinaceum

INCLUDING (ORTHOGRAPHIC VARIANT Vascular flora of Illinois (Mohlenbrock, 2014)
Silphium terebinthinaceum var. lucy-brauniae

INCLUDING Vascular flora of Illinois (Mohlenbrock, 2014)
Silphium terebinthinaceum var. terebinthinaceum

SYNONYMOUS WITH Flora of North America north of Mexico, vol. 19-20-21
Silphium terebinthinaceum var. terebinthinaceum

INCLUDING (ORTHOGRAPHIC VARIANT Floristic Synthesis of North America (Kartesz, 1999)
Silphium terebinthinaceum var. luciae-brauniae

INCLUDING Floristic Synthesis of North America (Kartesz, 1999)
Silphium terebinthinaceum var. terebinthinaceum

SYNONYMOUS WITH VASCULAR FLORA OF THE CAROLINAS (Radford, Ahles, & Bell, 1968) 179-54-003:
Silphium terebinthinaceum   FAMILY Asteraceae

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

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

INCLUDING [correct spelling]
Silphium terebinthinaceum var. lucybrauniae

 

Find by SCIENTIFIC NAME:

1388

Forb
Perennial

Habitat: mafic or calcareous glades, barrens, woodlands, prairies, and roadsides and powerline-rights-of-ways with remnant historical vegetation of those types, per Weakley's Flora

Native to the Carolinas & Georgia

Rare

map
CLICK HERE to see a map, notes, and images from Weakley's Flora of the Southeastern US.

LEAVES:
Simple
Alternate & basal

FLOWER:
Summer/Fall
Rays: Yellow
Disc: Yellow
Flower heads with 17-29 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!



 


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