Robert W. Freckmann Herbarium


  Heracleum mantegazzianum Sommier & Levier image
Photographer: (MDAR) Mass. Dept. of Ag. Resources           

Massachusetts Dept. of Agricultural Res.
Family Apiaceae
Heracleum mantegazzianum Sommier & Levier
giant hogweed
Heracleum: named for Hercules, who was supposed to have used it first for medicine
mantegazzianum: for Paolo Mantegazzi, 19th century Italian etnographist
Hazardous hazard symbol- click for definition   Prohibited Invasive - Eradicate!  Stop It symbol- click for definition
County distribution map- click for detailed distribution maps.
Detailed Distribution:
Town Range Maps
Google Dot Maps
Status: Introduced - locally established; potentially invasive
Plant: erect, biennial/perennial, 10'-15' tall forb; stems hollow, dark reddish-purple, hairy, each of the hairs surrounded by a purplish raised node; tuberous roots
Flower: white, 5-parted; inflorescence a flat, many-branched umbel up to 20" wide; blooms May-July
Leaf:deeply palmately cut, up to 5' wide, underside with coarse hairs, stalk spotted
Notes: The 2003 Guinness Book of Records recognizes Giant Hogweed as the largest weed in the world.
(Glossary)

More Information Natural Communities Herbarium Specimens
All Heracleum list Google- Images or Text
Synonyms 
There are no synonyms for this taxon.

         
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