Burke: Hieracium aurantiacum vs. Hieracium scouleri

	Hieracium aurantiacum	Hieracium scouleri
	orange hawkweed	hound-tongue hawkweed, Scouler's hawkweed
Habit	Perennial from fibrous roots and long rhizomes, the bristly stems 2-9 dm. tall, with milky juice.	Perennial herbs with milky juice from a short rhizome with fibrous roots; stems 3-10 dm. tall; herbage bristly below and often glaucous above.
Leaves	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.	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.
Flowers	Heads several in a compact terminal cluster, the corollas all ligulate and bright red-orange.	Achene terete, narrowed toward the base, ribbed.

	Hieracium aurantiacum	Hieracium scouleri
Flowering time	June-August	June-August
Habitat	Roadsides, fields, meadows, pastures, forest edge, wastelots, and other disturbed areas at low to middle elevations.	Mostly dry places in open woods, from foothills to middle elevations in the mountains.
Distribution	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]	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]
Origin	Introduced from Europe	Native
Conservation status	Not of concern	Not of concern
Sibling taxa	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	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
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	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

Hieracium aurantiacum

Hieracium scouleri

orange hawkweed

hound-tongue hawkweed, Scouler's hawkweed

Habit

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

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

Leaves

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.

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.

Flowers

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

Achene terete, narrowed toward the base, ribbed.

Hieracium aurantiacum

Hieracium scouleri

Flowering time

June-August

Habitat

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

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

Distribution

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]