Hieracium scabrum Michx. - Rough Hawkweed


 

|  back  | forward |

Hieracium scabrum - (image 1 of 4)

 

Taxonomy

Family: Asteraceae

Habitat

Open ground and dry woods.

Associates

 

Distribution

Nova Scotia and Quebec to MN, south to VA, KY, MO, and in mountains to northern GA.

Morphology

Herbaceous perennial from a short caudex or crown; stems mostly solitary, 20-150 cm, setose at least towards the base with spreading hairs rarely up to 5 mm, becoming stellate and long stipitate-glandular upwards, densely so in the inflorescence; leaves setose on both sides, more so on the petiole and midrib beneath; lower leaves broadly oblanceolate to elliptic, 5-20 cm (including petiole), the others progressively reduced upward and becoming more sessile, so that upper part of stem does not appear leafy; inflorescence open-corymbiform to more often elongate and cylindric; involucres 6-9 mm, hispid with blackish, mostly gland-tipped hairs; flowers 40-100 per head; achenes 2-3 mm, truncate, only obscurely if at all narrowed upward.

Notes

Flowers July to September

Wetland indicator: NA

Has fewer flowers in each head (8-30) than other similar species.

References

Gleason, Henry A. and A. Cronquist. 1991. Manual of Vascular Plants of Northeastern United States and Adjacent Canada. Second Ed.
The New York Botanical Garden. Bronx, NY

 


Home

 

 Michael Hough © 2018