Burke: Hieracium scouleri vs. Hieracium aurantiacum

	Hieracium scouleri	Hieracium aurantiacum
	hound-tongue hawkweed, Scouler's hawkweed	orange hawkweed
Habit	Perennial herbs with milky juice from a short rhizome with fibrous roots; stems 3-10 dm. tall; herbage bristly below and often glaucous above.	Perennial from fibrous roots and long rhizomes, the bristly stems 2-9 dm. tall, with milky juice.
Leaves	Basal and lower cauline leaves 5-20 cm. long and 1-3.5 cm. wide, entire, the short petiole winged; leaves reduced and becoming sessile upward.	Leaves all basal except for 1 or 2 very small cauline leaves, with long bristles on both sides, oblanceolate-linear, up to 1 dm. long.
Flowers	Achene terete, narrowed toward the base, ribbed.	Heads several in a compact terminal cluster, the corollas all ligulate and bright red-orange.

	Hieracium scouleri	Hieracium aurantiacum
Flowering time	June-August	June-August
Habitat	Mostly dry places in open woods, from foothills to middle elevations in the mountains.	Roadsides, fields, meadows, pastures, forest edge, wastelots, and other disturbed areas at low to middle elevations.
Distribution	Occurring on both sides of the Cascades crest in Washington; British Columbia to California, east to Alberta, Montana, Wyoming, and Utah. [WildflowerSearch map] [BONAP county map]	Occurring on both sides of the Cascades crest in Washington; British Columbia to California, east across southern Canada and northern U.S; widely distributed throughout eastern U.S. [WildflowerSearch map] [BONAP county map]
Origin	Native	Introduced from Europe
Conservation status	Not of concern	Not of concern
Sibling taxa	H. albiflorum, H. aurantiacum, H. caespitosum, H. flagellare, H. ×floribundum, H. glomeratum, H. lachenalii, H. longiberbe, H. maculatum, H. murorum, H. pilosella, H. piloselloides, H. sabaudum, H. ×stoloniflorum, H. triste, H. umbellatum	H. albiflorum, H. caespitosum, H. flagellare, H. ×floribundum, H. glomeratum, H. lachenalii, H. longiberbe, H. maculatum, H. murorum, H. pilosella, H. piloselloides, H. sabaudum, H. scouleri, H. ×stoloniflorum, H. triste, H. umbellatum
Web links	Local floras: BC, 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	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 scouleri

Hieracium aurantiacum

hound-tongue hawkweed, Scouler's hawkweed

orange hawkweed

Habit

Perennial herbs with milky juice from a short rhizome with fibrous roots; stems 3-10 dm. tall; herbage bristly below and often glaucous above.

Perennial from fibrous roots and long rhizomes, the bristly stems 2-9 dm. tall, with milky juice.

Leaves

Basal and lower cauline leaves 5-20 cm. long and 1-3.5 cm. wide, entire, the short petiole winged;

leaves reduced and becoming sessile upward.

Leaves all basal except for 1 or 2 very small cauline leaves, with long bristles on both sides, oblanceolate-linear, up to 1 dm. long.

Flowers

Achene terete, narrowed toward the base, ribbed.

Heads several in a compact terminal cluster, the corollas all ligulate and bright red-orange.

Hieracium scouleri

Hieracium aurantiacum

Flowering time

June-August

Habitat

Mostly dry places in open woods, from foothills to middle elevations in the mountains.

Roadsides, fields, meadows, pastures, forest edge, wastelots, and other disturbed areas at low to middle elevations.

Distribution

Occurring on both sides of the Cascades crest in Washington; British Columbia to California, east to Alberta, Montana, Wyoming, and Utah.

[WildflowerSearch map]

[BONAP county map]

Occurring on both sides of the Cascades crest in Washington; British Columbia to California, east across southern Canada and northern U.S; widely distributed throughout eastern U.S.

[WildflowerSearch map]

[BONAP county map]

Origin

Native

Introduced from Europe

Conservation status

Not of concern

Sibling taxa