UW Burke Herbarium species comparison

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Centaurea benedicta

Centaurea montana

blessed thistle

mountain bluet, mountain cornflower, montane starthistle
Habit Pubescent perennial from creeping rhizomes, the stems 30-60 cm. tall.
Leaves

Leaves alternate, entire, and lanceolate.
Flowers

Heads discoid, terminal and solitary on the stem;

flowers blue, the long corolla tube deeply five-lobed;

involucre bracts imbricate, with bristly margins.
Fruits

Achene.

Centaurea benedicta

Centaurea montana
Flowering time June-August May-August
Habitat Roadsides, fields, ditches, wastelots, and other disturbed, open areas. Roadsides, fields, ditches, shores, wastelots, and other disturbed, open areas.
Distribution
Occurring east of the Cascades crest in Washington; Washington to California, east to the Rocky Mountains, also in eastern North America.
[WildflowerSearch map]
[BONAP county map]
Occurring chiefly west of the Cascades crest in Washington; Alaska to Oregon, east to Montana, Idaho, and Utah, also from Great Lakes region to northeastern North America.
[WildflowerSearch map]
[BONAP county map]
Origin Introduced from Eurasia Introduced from Europe
Conservation status Not of concern Not of concern
Sibling taxa
C. calcitrapa, C. cyanus, C. diffusa, C. ×gerstlaueri, C. iberica, C. jacea, C. macrocephala, C. melitensis, C. montana, C. nigra, C. nigrescens, C. solstitialis, C. stoebe, C. trichocephala, C. ×varnensis
C. benedicta, C. calcitrapa, C. cyanus, C. diffusa, C. ×gerstlaueri, C. iberica, C. jacea, C. macrocephala, C. melitensis, C. nigra, C. nigrescens, C. solstitialis, C. stoebe, C. trichocephala, C. ×varnensis
Web links 
Unless otherwise noted, all data comes from the University of Washington's Burke Herbarium.



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