Hieracium scabrum, the rough hawkweed,[1] is a North American plant species in the tribe Cichorieae within the family Asteraceae. It is native to eastern and central Canada and the eastern and central United States from Nova Scotia west to Ontario, Minnesota, and Kansas south as far as Georgia and Oklahoma.[2]

Hieracium scabrum
Scientific classification
Kingdom:	Plantae
Clade:	Tracheophytes
Clade:	Angiosperms
Clade:	Eudicots
Clade:	Asterids
Order:	Asterales
Family:	Asteraceae
Genus:	Hieracium
Species:	H. scabrum
Binomial name
Hieracium scabrum Michx. 1803 not Willd. ex Froel. 1838 nor Gaud. 1820

Hieracium scabrum is an herb up to 60 cm (2.0 ft) tall with many hairs so that it feels rough to the touch. Leaves are mostly on the stem with only a few at the bottom. Leaves are up to 120 mm (4.7 in) long. One stalk can produce 5-50 flower heads in a conical or flat-topped array. Each head has 30-60 yellow ray flowers but no disc flowers.[3] Flowers bloom July to September.[4] It grows in sandy soils, disturbed and wooded sites.[3]

References

External links

• Media related to Hieracium scabrum at Wikimedia Commons
• Data related to Hieracium scabrum at Wikispecies
• Photo of herbarium specimen at Missouri Botanical Garden, collected in Missouri in 1996
• Photo by Gerrit Davidse, closeup of flower heads showing hairs on foliage

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