Burke: Crepis tectorum vs. Crepis intermedia

	Crepis tectorum	Crepis intermedia
	annual hawksbeard, narrow leaf hawksbeard, rooftop hawksbeard	gray hawksbeard, intermediate hawksbeard, limestone hawksbeard
Habit	Glabrous annual, 1-10 dm. tall, with milky juice.	Perennial with 1 or 2 stems from a tap-root, 2-7 dm. tall, more or less grey-woolly throughout, with milky juice.
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, pinnatifid, with entire or dentate lobes; other leaves few and 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 10-60, 7-12 flowered; involucre 10-16 mm. high, finely grey-woolly, outer bracts less than half as long as the 7-8 inner ones; corollas all ligulate, yellow, 14-30 mm. long.
Fruits	Achenes 2.5-4.5 mm. long, dark reddish-brown, spindle-shaped, with 10 ribs.	Achenes yellow or brownish, narrowed above.

	Crepis tectorum	Crepis intermedia
Flowering time	June-August	May-July
Habitat	Roadsides, fields, ditches, wastelots, and other disturbed, open areas.	Open forest, grassland, meadows, rocky or sandy slopes, and ridges from low to middle elevations in the mountains.
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; British Columbia to California, east to the Rocky Mountains. [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. barbigera, C. capillaris, 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: 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

Crepis intermedia

annual hawksbeard, narrow leaf hawksbeard, rooftop hawksbeard

gray hawksbeard, intermediate hawksbeard, limestone hawksbeard

Habit

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

Perennial with 1 or 2 stems from a tap-root, 2-7 dm. tall, more or less grey-woolly throughout, with milky juice.

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, pinnatifid, with entire or dentate lobes; other leaves few and 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 10-60, 7-12 flowered;

involucre 10-16 mm. high, finely grey-woolly, outer bracts less than half as long as the 7-8 inner ones;

corollas all ligulate, yellow, 14-30 mm. long.

Fruits

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

Achenes yellow or brownish, narrowed above.

Crepis tectorum

Crepis intermedia

Flowering time

June-August

May-July

Habitat

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

Open forest, grassland, meadows, rocky or sandy slopes, and ridges from low to middle elevations in the mountains.

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]