OregonFlora: Hieracium aurantiacum

	Hieracium aurantiacum
	devil's paintbrush, king-devil, orange hawkweed
Habit	Plants 15–60 cm; taprooted, stoloniferous.
Stems	erect; simple, pilose-hispid, usually also stipitate-glandular, tomentulose distally.
Leaves	basal, sometimes 1 near stem base, oblanceolate, 5–20 cm; margins entire; tips acute or obtuse; surfaces pilose-setose; petioles short, winged.
Inflorescences	raceme- or panicle-like arrays, bracteate or not.
Involucres	campanulate in flower; ovoid in fruit, 6–8 mm.
Florets	25–100+; ligules 10–15 mm; reddish orange, drying purplish.
Phyllaries	linear-lanceolate; surfaces blackish stipitate-glandular, usually setose-hispid; inner 13–30; outer > inner.
Fruits	columnar, 1.2–2 mm, dark brown.
2n	=18, 27, 36, 45, 54, 63, 72.

	Hieracium aurantiacum
Distribution	[WildflowerSearch map] [BONAP county map]
Discussion	Disturbed areas, roadsides, clearcuts, riverbanks, pastures. Flowering Jun–Aug. 100–1400 m. BW, Casc, CR, ECas. CA, ID, NV, WA; scattered in North America; Europe. Exotic. Hieracium aurantiacum is a conspicuous and well-known weed over much of the United States and southern Canada. Its scattered distribution in Oregon indicates an ability to disperse by seed, and once established it may persist and spread by both seeds and stolons.
Source	Flora of Oregon, volume 2, page 288 Kenton Chambers
Sibling taxa	H. albiflorum, H. bolanderi, H. caespitosum, H. greenei, H. horridum, H. lachenalii, H. longiberbe, H. murorum, H. parryi, H. pilosella, H. piloselloides, H. sabaudum, H. scouleri, H. triste, H. umbellatum
Web links	Local floras: CA, OR, WA Local Web sites: CalFlora, CalPhotos, Flora NW, PNW Herbaria, Turner Photog. WildflowerSearch iNaturalist (observations) USDA Plants Database LBJ Wildflower Center SEINet Plants of the World Online Encyclopedia of Life Wikipedia Google Image Search

Hieracium aurantiacum

devil's paintbrush, king-devil, orange hawkweed

Habit

Plants 15–60 cm; taprooted, stoloniferous.

Stems

erect; simple, pilose-hispid, usually also stipitate-glandular, tomentulose distally.

Leaves

basal, sometimes 1 near stem base, oblanceolate, 5–20 cm;

margins entire;

tips acute or obtuse;

surfaces pilose-setose;

petioles short, winged.

Inflorescences

raceme- or panicle-like arrays, bracteate or not.

Involucres

campanulate in flower; ovoid in fruit, 6–8 mm.

Florets

25–100+;

ligules 10–15 mm; reddish orange, drying purplish.

Phyllaries

linear-lanceolate;

surfaces blackish stipitate-glandular, usually setose-hispid; inner 13–30; outer > inner.

Fruits

columnar, 1.2–2 mm, dark brown.

=18, 27, 36, 45, 54, 63, 72.

Hieracium aurantiacum

Distribution

[WildflowerSearch map]

[BONAP county map]

Discussion

Disturbed areas, roadsides, clearcuts, riverbanks, pastures. Flowering Jun–Aug. 100–1400 m. BW, Casc, CR, ECas. CA, ID, NV, WA; scattered in North America; Europe. Exotic.

Hieracium aurantiacum is a conspicuous and well-known weed over much of the United States and southern Canada. Its scattered distribution in Oregon indicates an ability to disperse by seed, and once established it may persist and spread by both seeds and stolons.

Source

Flora of Oregon, volume 2, page 288
Kenton Chambers

Sibling taxa