Hieracium longipilum

{{short description|Species of flowering plant}}

{{Speciesbox

| image = Hieracium longipilum, 66502, Manhattan, KS, US imported from iNaturalist photo 44642566.jpg

| image_caption =

| genus = Hieracium

| species = longipilum

| authority = Torr. ex Hook. 1833

| synonyms_ref =

| synonyms =

}}

Hieracium longipilum, the hairy hawkweed,{{PLANTS|id=HILO2|taxon=Hieracium longipilum|accessdate=23 July 2015}} is a North American plant species in the tribe Cichorieae within the family Asteraceae. It is widespread across much of central Canada and the central United States from Ontario south to Texas and Louisiana. There are old reports of the species growing in Québec, but apparently does not grow there now.[http://bonap.net/MapGallery/County/Hieracium%20longipilum.png Biota of North America Program 2004 county distribution map]

Hieracium longipilum is an herb up to {{convert|200|cm|in|abbr=on}} or 6 2/3 feet) tall, with leaves in a rosette at the bottom and also along the stem. Leaves, stems, and the bracts surrounding the flower heads are covered with long and conspicuous hairs up to {{convert|15|mm|in|abbr=on}} long. Leaves are up to {{convert|25|cm|in|abbr=on}} long, with no teeth on the edges. One stalk will produce 10-12 flower heads in a conical or nearly cylindrical array. Each head has 30-60 yellow ray flowers but no disc flowers.[http://www.efloras.org/florataxon.aspx?flora_id=1&taxon_id=242416660 Flora of North America, Hieracium longipilum Torrey ex Hooker, 1833. ]