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Cirsium occidentale var. candidissimum

Cirsium occidentale (Nutt.) Jeps. var. candidissimum (Greene) J.F. Macbr.

Cirsium occidentale var. candidissimum (Greene) J.F. Macbr.

Cirsium candidissimum (Greene) Davidson & Moxley

Cirsium pastoris J.T. Howell

Snowy Thistle

KingdomPlantaePlants, but not fungi, lichens, or algae
SubkingdomTracheobiontaVascular plants—plants with a “circulatory system” for delivering water and nutrients
DivisionMagnoliophytaFlowering plants, also known as angiosperms
ClassMagnoliopsidaDicotyledons—plants with two initial seed leaves
SubclassAsteridaeA large class that encompasses asters
OrderAsteralesFlowering plants with a central disk flower and surrounding petals, like daisies
FamilyAsteraceaeThe aster family, which also includes daisies and sunflowers; from the Greek ἀστήρ, “star,” for the star-shaped flowers
GenusCirsiumFrom Greek kirsion, “a kind of thistle”
SpeciesoccidentaleFrom the west, western
var.candidissimumVery white

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Cirsium occidentale var. candidissimum description by Thomas H. Kent, last updated 14 Nov 2013.

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Cirsium occidentale (Snowy Thistle)

6/2/2009 · Zion National Park, UT
≈ 1¾ × 1¼" (4.8 × 3.1 cm) ID is uncertain

Cirsium occidentale (Snowy Thistle)

6/2/2009 · Zion National Park, UT
≈ 2 × 1¼" (5.3 × 3.7 cm) ID is uncertain

Range:

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