About Hieracium longipilum Torr. ex Hook.
Hieracium longipilum, commonly known as hairy hawkweed, is a North American plant species belonging to the tribe Cichorieae of the family Asteraceae. It is widespread across most of central Canada and the central United States, ranging from Ontario in the north down to Texas and Louisiana in the south. There are old historical reports that this species once grew in Québec, but it is apparently no longer found there. Hieracium longipilum is an herb that can grow up to 200 cm (6 2/3 feet, 79 inches) tall. It produces leaves in a rosette at its base, and additional leaves grow along its stem. Leaves, stems, and the bracts that surround the plant's flower heads are covered in long, highly visible hairs that can reach up to 15 mm (0.59 inches) in length. Individual leaves can grow up to 25 cm (9.8 inches) long, and their edges lack any teeth. A single stalk bears 10 to 12 flower heads arranged in a conical or nearly cylindrical cluster. Each flower head holds 30 to 60 yellow ray flowers, and produces no disc flowers.
