Pilosella officinarum

Pilosella officinarum
Scientific classification
Kingdom:	Plantae
Clade:	Tracheophytes
Clade:	Angiosperms
Clade:	Eudicots
Clade:	Asterids
Order:	Asterales
Family:	Asteraceae
Genus:	Pilosella
Species:	P. officinarum
Binomial name
	Pilosella officinarum; Vaill.
Synonyms
	Hieracium albofloccosum (Nägeli & Peter) Prain ; Hieracium kemulariae Üksip ; Hieracium leucopsilon Arv.-Touv. ; Hieracium melanops (Peter) J.Weiss ; Hieracium obscurisquamum (Nägeli & Peter) Prain ; Hieracium paradoxum Kem.-Nath. ; Hieracium pilosella L. ; Hieracium tricholepium (Nägeli & Peter) Prain ; Hieracium trichosoma (Peter) J.Weiss ; Pilosella angustella Norrl. ; Pilosella melanops (Peter) Dostál ; Pilosella micradenophora Dostál ; Pilosella tricholepia (Nägeli & Peter) Dostál ; Pilosella urnigera Norrl. ;

Pilosella officinarum (synonym Hieracium pilosella), known as mouse-ear hawkweed, is a yellow-flowered species of flowering plant in the daisy family Compositae (= Asteraceae), native to Europe and northern Asia. It produces single, lemon-coloured inflorescences. Like most hawkweed species, it is highly variable and is a member of a species complex of several dozens of subspecies and hundreds of varieties and forms. It is an allelopathic plant.