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devil's paintbrush, king-devil, orange hawkweed

shaggy hawkweed

Habit Plants 15–60 cm; taprooted, stoloniferous. Plants 10–30 cm; taprooted.
Stems

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

simple or branched, densely pilose-villous.

Leaves

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

margins entire;

tips acute or obtuse;

surfaces pilose-setose;

petioles short, winged.

basal and cauline, broadly elliptic to oblanceolate, 2–15 cm;

margins entire;

tips acute or obtuse;

surfaces densely pilose-villous;

petioles winged.

Inflorescences

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

panicle-like arrays, bracteate.

Involucres

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

± cylindric in flower and fruit, 6–9 mm.

Florets

25–100+;

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

6–15;

ligules 8–9 mm, yellow.

Phyllaries

linear-lanceolate;

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

lanceolate;

surfaces densely pilose-villous; inner 12–15; outer > inner.

Fruits

columnar, 1.2–2 mm, dark brown.

columnar, 3–3.5 mm; reddish brown.

2n

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

=18.

Hieracium aurantiacum

Hieracium horridum

Distribution
[WildflowerSearch map]
[BONAP county map]
[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.

Alpine rock outcrops, gravelly slopes, meadows. Flowering Jun–Oct. 1500–2300 m. Casc. CA, NV. Native.

Source Flora of Oregon, volume 2, page 288
Kenton Chambers
Flora of Oregon, volume 2, page 289
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
H. albiflorum, H. aurantiacum, H. bolanderi, H. caespitosum, H. greenei, H. lachenalii, H. longiberbe, H. murorum, H. parryi, H. pilosella, H. piloselloides, H. sabaudum, H. scouleri, H. triste, H. umbellatum
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