Burke: Crepis tectorum vs. Crepis barbigera

	Crepis tectorum	Crepis barbigera
	annual hawksbeard, narrow leaf hawksbeard, rooftop hawksbeard	bearded hawksbeard
Habit	Glabrous annual, 1-10 dm. tall, with milky juice.	Stout perennial from a taproot and crown, the 1-several stems 2-8 dm. tall; herbage sometimes sparsely gray-woolly, sometimes with yellow bristles.
Leaves	Basal leaves petiolate, the blade lanceolate or oblanceolate, finely toothed to pinnately parted, up to 15 cm. long and 4 cm. wide; reduced cauline leaves sessile and auriculate, linear, often involute.	Basal and lower cauline leaves 1-4 dm. long, pinnately or bi-pinnately toothed or parted, with lanceolate segments; upper leaves few and much reduced.
Flowers	Heads several to numerous, 30-70 flowered; involucre 6-9 mm. high, its inner bracts 12-15, with fine hairs and sometimes with stalked glands as well, the outer bracts about one-third as long; corollas all ligulate, yellow.	Heads few or many in a flat-topped inflorescence, 8-25 flowered; involucre 9-17 mm. high, covered with glandless yellow or green bristles; inner involucre bracts 6-10; corollas ligulate, yellow
Fruits	Achenes 2.5-4.5 mm. long, dark reddish-brown, spindle-shaped, with 10 ribs.	Achenes olive or yellowish, narrowed to the tip.

	Crepis tectorum	Crepis barbigera
Flowering time	June-August	May-July
Habitat	Roadsides, fields, ditches, wastelots, and other disturbed, open areas.	Sagebrush deserts to ponderosa pine forest openings at middle elevations.
Distribution	Occurring in scattered locations on both sides of the Cascades crest in Washington; Alaska to California, east across the northern regions of the U.S. and Canada to the Atlantic Coast. [WildflowerSearch map] [BONAP county map]	Occurring east of the Cascades crest in Washington; Washington to Oregon, east to Idaho. [WildflowerSearch map] [BONAP county map]
Origin	Introduced from Europe	Native
Conservation status	Not of concern	Not of concern
Sibling taxa	C. acuminata, C. atribarba, C. bakeri, C. barbigera, C. capillaris, C. intermedia, C. modocensis, C. nicaeensis, C. occidentalis, C. runcinata, C. setosa	C. acuminata, C. atribarba, C. bakeri, C. capillaris, C. intermedia, C. modocensis, C. nicaeensis, C. occidentalis, C. runcinata, C. setosa, C. tectorum
Web links	Local floras: BC, CA, OR, WA Local Web sites: CalFlora, CalPhotos, Flora NW, PNW Herbaria WildflowerSearch iNaturalist (observations) USDA Plants Database LBJ Wildflower Center SEINet Plants of the World Online Encyclopedia of Life Wikipedia Google Image Search	Local floras: OR, WA Local Web sites: Flora NW, PNW Herbaria WildflowerSearch iNaturalist (observations) USDA Plants Database LBJ Wildflower Center SEINet Plants of the World Online Encyclopedia of Life Wikipedia Google Image Search

Crepis barbigera

annual hawksbeard, narrow leaf hawksbeard, rooftop hawksbeard

bearded hawksbeard

Habit

Glabrous annual, 1-10 dm. tall, with milky juice.

Stout perennial from a taproot and crown, the 1-several stems 2-8 dm. tall; herbage sometimes sparsely gray-woolly, sometimes with yellow bristles.

Leaves

Basal leaves petiolate, the blade lanceolate or oblanceolate, finely toothed to pinnately parted, up to 15 cm. long and 4 cm. wide; reduced cauline leaves sessile and auriculate, linear, often involute.

Basal and lower cauline leaves 1-4 dm. long, pinnately or bi-pinnately toothed or parted, with lanceolate segments; upper leaves few and much reduced.

Flowers

Heads several to numerous, 30-70 flowered;

involucre 6-9 mm. high, its inner bracts 12-15, with fine hairs and sometimes with stalked glands as well, the outer bracts about one-third as long;

corollas all ligulate, yellow.

Heads few or many in a flat-topped inflorescence, 8-25 flowered;

involucre 9-17 mm. high, covered with glandless yellow or green bristles; inner involucre bracts 6-10;

corollas ligulate, yellow

Fruits

Achenes 2.5-4.5 mm. long, dark reddish-brown, spindle-shaped, with 10 ribs.

Achenes olive or yellowish, narrowed to the tip.

Crepis tectorum

Crepis barbigera

Flowering time

June-August

May-July

Habitat

Roadsides, fields, ditches, wastelots, and other disturbed, open areas.

Sagebrush deserts to ponderosa pine forest openings at middle elevations.

Distribution

Occurring in scattered locations on both sides of the Cascades crest in Washington; Alaska to California, east across the northern regions of the U.S. and Canada to the Atlantic Coast.

[WildflowerSearch map]

[BONAP county map]