Spermatophytes (seed plants): Angiosperms (flowering plants): Eudicots: Core Eudicots: Asterids: Campanulids: Apiales
WEAKLEY'S FLORA (11/30/12):
Conium maculatum
FAMILY
Apiaceae
Dig deeper at SERNEC, a consortium of southeastern herbaria.
Check out EDDMapS.org to see where this has been reported.
Read more about Poison Hemlock at Vascular Plants of North Carolina.
SYNONYMOUS WITH
PLANTS NATIONAL DATABASE:
Conium maculatum
FAMILY
Apiaceae
SYNONYMOUS WITH
VASCULAR FLORA OF THE CAROLINAS (Radford, Ahles, & Bell, 1968) 140-24-001:
Conium maculatum
FAMILY
Apiaceae
COMMON NAME:
Poison Hemlock
To see larger pictures, click or hover over the thumbnails.
)
USDA-NRCS PLANTS Database / Britton, N.L., and A. Brown. 1913 pnd_coma2_001_lvd
)
JK Marlow jkm090405_092
April Walker County GA
)
JK Marlow jkm090405_094b
April Walker County GA
Stems hollow, spotted, per Vascular Flora of the Carolinas.
)
JK Marlow jkm090524_012
May Pickens County SC
Roadside ditch
Leaves broadly triangular, 3-4x pinnately compound, can be over 12" long, per Wildflowers of Tennessee, the Ohio Valley, and the Southern Appalachians.
)
JK Marlow jkm090524_014
May Pickens County SC
Roadside ditch
)
JK Marlow jkm090524_017
May Pickens County SC
Roadside ditch
)
JK Marlow jkm090524_037
May Pickens County SC
Roadside ditch
A coarse, taprooted biennial to 9' tall, per Wildflowers of Tennessee, the Ohio Valley, and the Southern Appalachians.
)
JK Marlow jkm090524_042
May Pickens County SC
Roadside ditch
)
JK Marlow jkm090524_057
May Pickens County SC
Roadside ditch
)
JK Marlow jkm090524_059
May Pickens County SC
Roadside ditch
)
JK Marlow jkm090524_063
May Pickens County SC
Roadside ditch
Tiny white flowers in umbels 1.5-2.5" wide, per Wildflowers of Tennessee, the Ohio Valley, and the Southern Appalachians.
)
Richard and Teresa Ware rtw_conium_maculatum_19
May
)
Ron Lance rwl_conium_maculatum
June Jackson County NC
Big Ridge Preserve
)
Steve Dewey, Utah State University, Bugwood.org bug_1459207
Month Unknown
)
Joseph M. DiTomaso, University of California - Davis, Bugwood.org bug_5374190
Month Unknown
)
Joseph M. DiTomaso, University of California - Davis, Bugwood.org bug_5374191
Month Unknown
)
John M. Randall, The Nature Conservancy, Bugwood.org bug_5392073
Month Unknown
)
Bruce Ackley, The Ohio State University, Bugwood.org bug_5438055
Month Unknown
)
D. Walters and C. Southwick, Table Grape Weed Disseminule ID, USDA APHIS ITP, B bug_5458174
Month Unknown
WEAKLEY'S FLORA (11/30/12):
Conium maculatum
FAMILY
Apiaceae
SYNONYMOUS WITH
PLANTS NATIONAL DATABASE:
Conium maculatum
FAMILY
Apiaceae
SYNONYMOUS WITH
VASCULAR FLORA OF THE CAROLINAS (Radford, Ahles, & Bell, 1968) 140-24-001:
Conium maculatum
FAMILY
Apiaceae
2837
Forb
Biennial
Non-native: Eurasia
Documented growing wild in GA NC SC
Uncommon (rare in GA)
Look for it in ditches, roadsides, streambanks, disturbed areas, per Weakley's Flora
Click here to see a more detailed map from University of North Carolina at Chapel Hill Herbarium,
or click here to see a map from SERNEC, a consortium of southeastern herbaria.
This plant may be causing problems in natural areas outside its native range, according to authorities such as:
...Moist
...Variable
LEAVES:
Complexly compound, with 2+ levels of pinnate and/or ternate compoundness
Alternate
FLOWER:
Spring/Summer
White
Radially symmetrical
5-merous
Inferior ovary
Flowers in compound umbels
FRUIT:
Summer
Schizocarp of two mericarps
TO LEARN MORE about this plant, look it up in a good book!
- Invasive Plants, Guide to Identification, Impacts and Control p341
- Wildflowers of the Atlantic Southeast p147
- Wild Flowers of NC, 2nd edition p168
- Wildflowers of Tennessee p175
- Wildflowers of Tennessee, the Ohio Valley, and the Southern Appalachians p212
- Wildflowers of the Southern Mountains p115
- Wildflowers of the Sandhills Region p242