BugwoodWiki Article

orange hawkweed
Hieracium aurantiacum L.

Overview

Appearance
Hieracium aurantiacum is a perennial plant that is 11.8-23.6 in. (30-60 cm) tall and produces a milky sap.
Foliage
Leaves are mostly basal, elliptical, 2-8 in. (5-20 cm) long, 0.4-1.2 in. (1-3 cm) wide and covered with short, stiff, black hairs. The stems can grow up to 12 in. (30.5 m) tall.
Flowers
Flowers appear in compact cluster of 5 or more dandelion-like flowers on short hairy stalks at the top of the plant. They are 0.75-1 in. (1.9-2.5 cm) across, orange to red, have square-edged petals and appear in May to June on leafless flower stalks.
Fruit
Fruit is a dark seed with a tuft of white hair to be carried in the wind. The plant can spread by seeds, stolons, and rhizomes.
Ecological Threat
Hieracium aurantiacum is usually found in sunny areas and occurs in disturbed areas such as roadsides, gravel pits, meadows, and pastures. It is native to Europe.

Resources

Selected Images


0023045
0023045

orange hawkweed
Hieracium aurantiacum
Flower(s)
Washington State University Archive
1196157
1196157

orange hawkweed
Hieracium aurantiacum
Plant(s)
Michael Shephard
1196153
1196153

orange hawkweed
Hieracium aurantiacum
Flower(s)
Michael Shephard
1196147
1196147

orange hawkweed
Hieracium aurantiacum
Foliage
Michael Shephard
5374489
5374489

orange hawkweed
Hieracium aurantiacum
Foliage
Joseph M. DiTomaso
1196162
1196162

orange hawkweed
Hieracium aurantiacum
Fruit(s)
Michael Shephard
1196156
1196156

orange hawkweed
Hieracium aurantiacum
Flower(s)
Michael Shephard
1196087
1196087

orange hawkweed
Hieracium aurantiacum
Plant(s)
Tom Heutte
1196151
1196151

orange hawkweed
Hieracium aurantiacum
Plant(s)
Nanna Borcherdt
1196154
1196154

orange hawkweed
Hieracium aurantiacum
Flower(s)
Michael Shephard
1196155
1196155

orange hawkweed
Hieracium aurantiacum
Flower(s)
Michael Shephard
1196167
1196167

orange hawkweed
Hieracium aurantiacum
Infestation
Michael Shephard
1196185
1196185

orange hawkweed
Hieracium aurantiacum
Flower(s)
UAF Cooperative Extension Archive
1556277
1556277

orange hawkweed
Hieracium aurantiacum
Fruit(s)
Ken Chamberlain
1556273
1556273

orange hawkweed
Hieracium aurantiacum
Fruit(s)
Ken Chamberlain
5307055
5307055

orange hawkweed
Hieracium aurantiacum
Plant(s)
USDA PLANTS Database

Maps


EDDMapS Distribution - This map is incomplete and is based only on current site and county level reports made by experts, herbaria, and literature. For more information, visit www.eddmaps.org

EDDMapS Distribution

State Regulated List - This map identifies those states that list this species on their regulated list. For more information, visit Invasive.org

State Regulated List

Taxonomic Rank

Kingdom: Plantae
Phylum: Magnoliophyta
Class: Magnoliopsida
Subclass: Asteridae
Order: Asterales
Family: Asteraceae
Genus: Hieracium

Other System Links

Plants: HIAU
Bayer: HIEAU
GRIN: 104345
ITIS: 37697
NPDN Pest: PBFBXBA
NPDN Host: 36398

Categories

Category: Forbs/Herbs