Hieracium aurantiacum |
Hieracium triste |
|
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devil's paintbrush, king-devil, orange hawkweed |
alpine hawkweed, slender hawkweed |
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Habit | Plants 15–60 cm; taprooted, stoloniferous. | Plants (2.5)4–30 cm; taprooted. |
Stems | erect; simple, pilose-hispid, usually also stipitate-glandular, tomentulose distally. |
erect; simple, tomentulose, sometimes glabrous proximally. |
Leaves | basal, sometimes 1 near stem base, oblanceolate, 5–20 cm; margins entire; tips acute or obtuse; surfaces pilose-setose; petioles short, winged. |
basal, broadly or narrowly elliptic to oblanceolate, 3–12+ cm; margins entire, rarely obscurely denticulate; tips acute or obtuse; surfaces usually glabrous, rarely stipitate-glandular, petiolate. |
Inflorescences | raceme- or panicle-like arrays, bracteate or not. |
raceme-like arrays or heads solitary, bracteate or not. |
Involucres | campanulate in flower; ovoid in fruit, 6–8 mm. |
cylindric or campanulate; ovoid in fruit, 6–10 mm. |
Florets | 25–100+; ligules 10–15 mm; reddish orange, drying purplish. |
20–60+; ligules 7–11 mm, yellow. |
Phyllaries | linear-lanceolate; surfaces blackish stipitate-glandular, usually setose-hispid; inner 13–30; outer > inner. |
linear-lanceolate; surfaces stellatetomentulose; black-villous, stipitate-glandular; inner 12–20+; outer gradually shorter. |
Fruits | columnar, 1.2–2 mm, dark brown. |
columnar, 1.5–3.5 mm, dark brown. |
2n | =18, 27, 36, 45, 54, 63, 72. |
=18. |
Hieracium aurantiacum |
Hieracium triste |
|
Distribution | ||
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. |
Subalpine meadows, rocky slopes, streamsides, forests. Flowering Jul–Sep. 1300–3000 m. BW, Casc, ECas. CA, ID, WA; north to AK, northeast to Northwest Territories, east to WY, southeast to NM. Native. |
Source | Flora of Oregon, volume 2, page 288 Kenton Chambers |
Flora of Oregon, volume 2, page 291 Kenton Chambers |
Sibling taxa | ||
Synonyms | Hieracium gracile, Hieracium gracile var. densifloccosum, Hieracium gracile var. gracile, Hieracium triste var. gracile | |
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