Hawkweed

Orange Hawkweed,
Scientific classification
Kingdom: Plantae
Division: Magnoliophyta
Class: Magnoliopsida
Order: Asterales
Family: Asteraceae
Genus: Hieracium
Species
Hieracium alpinum (Alpine Hawkweed)
Hieracium aurantiacum (Orange Hawkweed)
Hieracium lachenalii (Common Hawkweed)
Hieracium pilosella (Mouseear Hawkweed)
and many more

Ref.: ITIS 37691

Hawkweed refers to any species in the Hieracium genus of the Asteraceae family, typically refered to as an aster. They are common perennials, featuring clusters of flower heads similar to dandelions atop a long, fuzzy stalk, with some species growing up to three feet. "Hawkweed", is a slang name taken from folklore which said that hawks would chew on the plant to improve their eyesight.