Hieracium umbellatum (Narrow-leaf Hawkweed)

Plant Info
Also known as: Canada Hawkweed, Rough Hawkweed, Northern Hawkweed
Genus:Hieracium
Family:Asteraceae (Aster)
Life cycle:perennial
Origin:native
Habitat:part shade, sun; sandy soil; fields, roadsides, beaches, open woods, woodland edges, rock outcrops
Bloom season:June - September
Plant height:1 to 5 feet
Wetland Indicator Status:none
MN county distribution (click map to enlarge):Minnesota county distribution map
National distribution (click map to enlarge):National distribution map

Pick an image for a larger view. See the glossary for icon descriptions.

Detailed Information

Flower: Flower shape: 7+petals Cluster type: panicle

[photo of flowers] A cluster of 5 to 30+ dandelion-like flowers at the top of the stem, usually open. Flowers are yellow, ½ inch to 1 inch diameter with 30 to 80+ rays (petals). The bracts (phyllaries) surrounding the base of the flower are narrow, 1/3 to ½ inch (9 to 11+ mm) long, the tips often spreading, and hairless or sparsely covered in short hairs, rarely with any long or glandular hairs. Flower stalks are typically covered in tiny star-shaped hairs.

Leaves and stems: Leaf attachment: alternate Leaf type: simple

[photo of leaves] Leaves are alternate, 1 to 4+ inches long, ½ to 1+ inches wide, lance-elliptic, stalkless, sometimes clasping, blunt to pointed at the tip, becoming smaller as they ascend the stem. Around the edges are usually a few widely spaced teeth or tooth-like projections and very short rough hairs; the surface is usually rough textured from star-shaped hairs. Stems are single, unbranched, erect to ascending, hairless or with sparse long hairs and/or star-shaped hairs.

Fruit: Fruit type: seed with plume

[photo of fruit] Fruit is a dry seed that ripens to black, with a tuft of light brown hair to carry it off in the wind.

Notes:

Widespread in all but the southwest prairie regions, Narrow-leaf Hawkweed is found in a variety of habitats, including meadows, shores, woods and woodland edges, roadsides and rock outcrops, in wet to dry soil that is almost always sandy or rocky. Not to be confused with the several non-native Hawkweeds or other species with yellow dandelion-type flowers, H. umbellatum has leafier stems, no basal leaves, and stem leaves are usually irregularly toothy and rough textured. It can also grow taller than most; I once saw a small group of plants in dense shade that were at least 5 feet tall, though 3 to 4 feet is not uncommon.

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More photos

Photos by K. Chayka taken in Anoka anc Ramsey counties. Photos by Peter M. Dziuk taken in Anoka, Kanabec and Pine counties.

Comments

Have you seen this plant in Minnesota, or have any other comments about it?

Posted by: Nancy B - Carleton College Arboretum, Rice County
on: 2016-09-26 14:14:04

Growing in restored prairie on a sandy hilltop. Seed originally collected from a location in Goodhue County. Other species growing in both locations with this plant include: Liatris punctata, Monarda punctata, Solidago nemoralis, Schizachyrium scoparium.

Posted by: Kenny h - Shooting Star Trail West of Rose Creek
on: 2017-07-26 16:50:04

First time photo and I'D on this Hawkweed...thanks to the distribution map, I'm confidant...this plant had a blotchy, spotted stem???...I really like the sawtooth tips of the petals...sure wish we could add photos.

Posted by: Tanya Beyer Hovi - Sandy Township, St. Louis County
on: 2021-07-31 22:06:09

Growing in a gravelly roadside adjoining the wet soil of a marsh

Posted by: Brett W - Sherburne and Anoka County
on: 2023-08-20 18:32:50

Saw this blooming the last couple of weeks at Uncas Dunes SNA and at the Fish Lake Trail area.

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