Cirsium occidentale var. candidissimum (Snowy thistle)

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

Snowy thistle

Kingdom	Plantae	Plants, but not fungi, lichens, or algae
Subkingdom	Tracheobionta	Vascular plants—plants with a “circulatory system” for delivering water and nutrients
Division	Magnoliophyta	Flowering plants, also known as angiosperms
Class	Magnoliopsida	Dicotyledons—plants with two initial seed leaves
Subclass	Asteridae	A large class that encompasses asters
Order	Asterales	Flowering plants with a central disk flower and surrounding petals, like daisies
Family	Asteraceae	The aster family, which also includes daisies and sunflowers; from the Greek ἀστήρ, “star,” for the star-shaped flowers
Genus	Cirsium	From Greek kirsion, “a kind of thistle”
Species	occidentale
var.	candidissimum

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Cirsium candidissimum (Greene) Davidson & Moxley

Cirsium pastoris J.T. Howell

Cirsium occidentale var. candidissimum description by Thomas H. Kent, last updated 25 May 2020.

6/2/2009 · Zion National Park, Utah
≈ 2 × 1½" (5.8 × 4.1 cm) ID is uncertain

6/2/2009 · Zion National Park, Utah
≈ 2 × 2" (5.5 × 5.3 cm) ID is uncertain

Range: