Spermatophytes (seed plants): Angiosperms (flowering plants): Eudicots: Core Eudicots: Asterids: Campanulids: Asterales
WEAKLEY'S FLORA OF THE SOUTHEASTERN US (4/14/23):
Silphium mohrii
FAMILY
Asteraceae
Go to FSUS key
Dig deeper at SERNEC, a consortium of southeastern herbaria.
SYNONYMOUS WITH
PLANTS NATIONAL DATABASE:
Silphium mohrii
FAMILY
Asteraceae
SYNONYMOUS WITH Floristic Synthesis of North America. BONAP (Kartesz, 2021)
Silphium mohrii
SYNONYMOUS WITH Flora of North America
Silphium mohrii
SYNONYMOUS WITH Floristic Synthesis of North America (Kartesz, 1999)
Silphium mohrii
SYNONYMOUS WITH Manual of the Southeastern Flora (Small, 1933, 1938)
Silphium mohrii
COMMON NAME:
Shaggy Rosinweed
To see larger pictures, click or hover over the thumbnails.
)
Richard and Teresa Ware rtw_silphium_mohrii_18
September
Desnsely stiff-haired stems give the plant a "shaggy" appearance, per Wildflowers of Tennessee, the Ohio Valley, and the Southern Appalachians (Horn, Cathcart, Hemmerly, & Duhl, 2005).
)
Richard and Teresa Ware rtw_silphium_mohrii_2
September
About 13 pale yellow ray flowers, per Wildflowers of Tennessee, the Ohio Valley, and the Southern Appalachians (Horn, Cathcart, Hemmerly, & Duhl, 2005).
)
Richard and Teresa Ware rtw_silphium_mohrii_22_s
September
WEAKLEY'S FLORA OF THE SOUTHEASTERN US (4/14/23):
Silphium mohrii
FAMILY
Asteraceae
SYNONYMOUS WITH
PLANTS NATIONAL DATABASE:
Silphium mohrii
FAMILY
Asteraceae
SYNONYMOUS WITH
Floristic Synthesis of North America. BONAP (Kartesz, 2021)
Silphium mohrii
SYNONYMOUS WITH
Flora of North America
Silphium mohrii
SYNONYMOUS WITH
Floristic Synthesis of North America (Kartesz, 1999)
Silphium mohrii
SYNONYMOUS WITH
Manual of the Southeastern Flora (Small, 1933, 1938)
Silphium mohrii
3787
Forb
Perennial
Habitat: Prairies, per Weakley's Flora
Native to Georgia
Rare
CLICK HERE to see a map, notes, and images from Weakley's Flora of the Southeastern US.
LEAVES:
Simple
Mostly alternate, sometimes opposite (basal leaves persistent)
FLOWER:
Summer/Fall
Rays: Pale yellow
Disc: Yellow
Flower heads with 13(10-20) 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!
- Field Guide to the Rare Plants of Georgia (Chafin, 2007) p369
- Wildflowers of Tennessee, the Ohio Valley, and the Southern Appalachians (Horn, Cathcart, Hemmerly, & Duhl, 2005) p376
If a search such as "Carex leptalea var. leptalea" doesn't deliver the results you want, try "Carex leptalea".
Or, to minimize chances of a misspelling, try just "Carex le".
Less is more: If "pencil flower" doesn't deliver the results you want, try "pencil".