Spermatophytes (seed plants): Angiosperms (flowering plants): Eudicots: Core Eudicots: Asterids: Campanulids: Asterales
WEAKLEY'S FLORA OF THE SOUTHEASTERN US (4/24/22):
Silphium terebinthinaceum
FAMILY
Asteraceae
Go to FSUS key
Dig deeper at SERNEC, a consortium of southeastern herbaria.
Read more about Prairie-dock at Vascular Plants of North Carolina.
INCLUDING
PLANTS NATIONAL DATABASE:
Silphium terebinthinaceum var. terebinthinaceum
FAMILY
Asteraceae
INCLUDING PLANTS National Database
Silphium terebinthinaceum var. luciae-brauniae
SYNONYMOUS WITH Flora of North America north of Mexico, vol. 19-20-21 (2006)
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
COMMON NAME:
Prairie-dock, Broadleaf Prairie-dock
To see larger pictures, click or hover over the thumbnails.
)
USDA-NRCS PLANTS Database / Britton, N.L., and A. Brown. 1913 pnd_site_001_lvd
)
USDA-NRCS PLANTS Database / USDA Wetland flora: Field office illustrated guide pnd_site_005_lvd
)
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).
)
Alan S. Weakley asw_974603873980377
May Granville County NC
)
JK Marlow jkm140603_383
June Pickens County SC
SC Botanical Garden
)
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.
)
Richard and Teresa Ware rtw_s_terebinthina_jr05_1
October
)
Richard and Teresa Ware rtw_s_terebinthinaceum_3s
October
)
JK Marlow jkm0411f_0304
November York County SC
Blackjacks Heritage Preserve
)
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).
)
JK Marlow jkm111112_335
November York County SC
Blackjacks Heritage Preserve
WEAKLEY'S FLORA OF THE SOUTHEASTERN US (4/24/22):
Silphium terebinthinaceum
FAMILY
Asteraceae
INCLUDING
PLANTS NATIONAL DATABASE:
Silphium terebinthinaceum var. terebinthinaceum
FAMILY
Asteraceae
INCLUDING
PLANTS National Database
Silphium terebinthinaceum var. luciae-brauniae
SYNONYMOUS WITH
Flora of North America north of Mexico, vol. 19-20-21
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
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
CLICK HERE to see a map, notes, and images from Weakley's Flora of the Southeastern US.
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 & 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!
- All About South Carolina Wildflowers (Midgley, 1999) p259
- Guide to the Wildflowers of SC (Porcher & Rayner, 2001) p217
- Newcomb's Wildflower Guide (Newcomb, 1977) p362
- Field Guide to the Wildflowers of Georgia (Chafin, 2016) p114
- Wildflowers of Tennessee (Carman, 2005) p326
- Wildflowers of Tennessee, the Ohio Valley, and the Southern Appalachians (Horn, Cathcart, Hemmerly, & Duhl, 2005) p377
- Wildflowers & Plant Communities of the Southern Appalachian Mountains and Piedmont (Spira, 2011) p440
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