Spermatophytes (seed plants): Angiosperms (flowering plants): Eudicots: Core Eudicots: Asterids: Campanulids: Apiales
WEAKLEY'S FLORA OF THE SOUTHEASTERN US (4/24/22):
Heracleum mantegazzianum
FAMILY
Apiaceae
Go to FSUS key
Dig deeper at SERNEC, a consortium of southeastern herbaria.
Check out EDDMapS.org to see where this has been reported.
Read more about Giant Hogweed at Vascular Plants of North Carolina.
SYNONYMOUS WITH
PLANTS NATIONAL DATABASE:
Heracleum mantegazzianum
FAMILY
Apiaceae
SYNONYMOUS WITH Floristic Synthesis of North America. BONAP (Kartesz, 2021)
Heracleum mantegazzianum
COMMON NAME:
Giant Hogweed
NameThatPlant has no pictures at this time. You might try this link: Flora of the Southeastern United States
WEAKLEY'S FLORA OF THE SOUTHEASTERN US (4/24/22):
Heracleum mantegazzianum
FAMILY
Apiaceae
SYNONYMOUS WITH
PLANTS NATIONAL DATABASE:
Heracleum mantegazzianum
FAMILY
Apiaceae
SYNONYMOUS WITH
Floristic Synthesis of North America. BONAP (Kartesz, 2021)
Heracleum mantegazzianum
3800
Forb
Perennial
Habitat: Disturbed areas, pastures, per Weakley's Flora
Non-native: Caucasus Mountains
Rare
CLICK HERE to see a map, notes, and images from Weakley's Flora of the Southeastern US.
This plant is causing problems in natural areas outside its native range, according to authorities such as:
- Forest Health Assessment & Applied Sciences Team: New Invaders of the Southeast
- SC List of Regulated Pest Plant Species, 2017
- USDA Federal Noxious Weeds, 091820
- Virginia Department of Conservation and Recreation, 2014
LEAVES:
Compound
Alternate
FLOWER:
Summer
White
5-merous
Inferior ovary
Flowers in compound umbels
FRUIT:
Summer/Fall
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 (Kaufman & Kaufman, 2007) p303
- New Invaders of the Southeast (Rawlins et al., 2018) p057
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".