Heracleum maximum
Videos
Heracleum maximum, commonly known as cow parsnip, is the only member of the genus Heracleum native to North America. It is also known as American cow-parsnip, Satan celery, Indian celery, Indian rhuba
Heracleum lanatum from High Trail
The leaves are up to 40 cm (16 in) across and divided into lobes.
The seeds are 8–12 mm (5⁄16–1⁄2 in) long and 5–8 mm (3⁄16–5⁄16 in) wide.
Heracleum maximum Bart. Batiscan River banks, Quebec
Heracleum mantegazzianum
Videos
Heracleum mantegazzianum, commonly known as giant hogweed, is a monocarpic perennial herbaceous plant in the carrot family Apiaceae. H. mantegazzianum is also known as cartwheel-flower, giant cow pars
Heracleum maximum
…seeds are 8–12 millimetres (3⁄8–1⁄2 in) long and 5–8 mm (3⁄16–5⁄16 in) wide. Heracleum maximum is commonly confused with the non-native European species Heracleum mantegazzianum (giant hogweed), a much larger plant that typically has purplish spots on the stems, as well as more sharply serrated leaves. Other tall invasive…
Giant hogweed in Dunnyduff Woods, Keith
Green, red-spotted stem with white hairs
Giant hogweed flower head
Heracleum mantegazzianum seeds