Hieracium umbellatum

Hieracium umbellatum (commonly called Hieracium canadense), the Canadian hawkweed, Canada hawkweed, narrowleaf hawkweed, or northern hawkweed, is a flowering plant in the family Asteraceae.

Distribution
It is native to most of the temperate parts of the northern hemisphere.

Description
Its pointed leaves have toothed margins, where the teeth can appear almost hooked. The flowers of the plant are yellow.

Infraspecific synonyms
There are many named infraspecific taxa of Hieracium umbellatum: • Hieracium canadense Michx. forma lepagei Vict.

• Hieracium canadense Michx. forma pilosius Lepage

• Hieracium canadense Michx. forma rufescens Lepage

• Hieracium canadense Michx. var. angustifolium Torr. & A.Gray p.p.

• Hieracium canadense Michx. var. columbianum (Rydb.) H. St.John

• Hieracium canadense Michx. var. divaricatum Lepage

• Hieracium canadense Michx. var. fasciculatum (Pursh) Fernald

• Hieracium canadense Michx. var. hirtirameum Fernald

• Hieracium canadense Michx. var. kalmii (L.) Scoggan

• Hieracium canadense Michx. var. latifolium Torr. & A.Gray

• Hieracium canadense Michx. var. scabrum Schwein.

• Hieracium canadense Michx. var. subintegrum Lepage

• Hieracium kalmii L. var. canadense (Michx.) Reveal

• Hieracium kalmii L. var. fasciculatum (Pursh) Lepage

• Hieracium kalmii L. var. subintegrum (Lepage) Lepage

• Hieracium scabriusculum Schwein. forma chrysostylum Lepage

• Hieracium scabriusculum Schwein. forma phaeostylum Lepage

• Hieracium scabriusculum Schwein. forma xanthostylum Lepage

• Hieracium scabriusculum Schwein. var. columbianum (Rydb.) Lepage

• Hieracium scabriusculum Schwein. var. perhirsutum Lepage

• Hieracium scabriusculum Schwein. var. saximontanum Lepage

• Hieracium scabriusculum Schwein. var. scabrum (Schwein.) Lepage

• Hieracium subnudum L. var. canadense (Michx.)(Michx.) DC.

• Hieracium sylvaticum Salisb., nom. illeg. hom., non (L.) L.

• Hieracium umbellatum L. subsp. canadense (Michx.) Guppy

• Hieracium umbellatum L. subsp. scabriusculum (Schwein.) Á. & D. Löve

• Hieracium umbellatum L. var. canadense (Michx.) Breitung

• Hieracium umbellatum L. var. commune Fr.

• Hieracium umbellatum L. var. coronopifolium Bernh. ex Kom.

• Hieracium umbellatum L. var. mongolicum Fr.

• Hieracium umbellatum L. var. scabriusculum (Schwein.) Farw.

• Hieracium laevigatum subsp. canadense (Michx.) Zahn

• Hieracium umbellatum L. var. canadense (Michx.) Breitung

• Hieracium canadense Michx. var. canadense

• Hieracium canadense Michx. var. fasciculatum (Pursh) Fernald

• Hieracium scabriusculum Schwein. var. columbianum (Rydb.) Lepage

• Hieracium umbellatum subsp. monticola (Jord.) Nyman