Home/Species/ Tall Mountain Thistle

Cirsium hesperium

(Eastw.) Petrak

Tall Mountain Thistle

G3Vulnerable Found in 2 roadless areas NatureServe Explorer →

G3VulnerableGlobal Rank

Identity

Unique IDELEMENT_GLOBAL.2.883752

Element CodePDAST2E3P3

Record TypeSPECIES

ClassificationSpecies

Classification StatusStandard

Name CategoryVascular Plant

Endemicendemic to a single state or province

KingdomPlantae

PhylumAnthophyta

ClassDicotyledoneae

OrderAsterales

FamilyAsteraceae

GenusCirsium

Synonyms

Cirsium eatonii var. hesperium(Eastw.) D.J. Keil

Concept Reference

Flora of North America Editorial Committee (FNA). 2006a. Flora of North America north of Mexico. Vol. 19. Magnoliophyta: Asteridae, part 6: Asteraceae, part 1. Oxford University Press, New York. xxiv + 579 pp.

Taxonomic Comments

FNA (vol. 19, 2006) recognized Cirsium eatonii var. eriocephalum and C. eatonii var. hesperium as distinct. In contrast, Kartesz (1994, 1999) included C. eriocephalum and C. hesperium in a broad concept of C. scopulorum. More recently, Ackerfield (2022, 2023) and Siniscalchi et al. (2023) found that the concept of C. eatonii var. eriocephalum consists of three distinct species: an even narrower C. scopulorum, C. funkiae, and C. tukuhnikivatzicum. Siniscalchi et al. (2023) continues to distinguish C. hesperium, elevated to species level, as well.

Conservation Status

Rank MethodExpertise without calculation

Review Date2012-10-29

Change Date2012-10-29

Ecology & Habitat

Other Nations (1)

United StatesN3

Province	Rank	Native
Colorado	S3	Yes

Plant Characteristics

Economic Value (Genus)No

Roadless Areas (2)

Colorado (2)

Area	Forest	Acres
Bristol Head	Rio Grande NF	46,087
Pole Mountain / Finger Mesa	Rio Grande NF	43,863

References (2)

Flora of North America Editorial Committee (FNA). 2006a. Flora of North America north of Mexico. Vol. 19. Magnoliophyta: Asteridae, part 6: Asteraceae, part 1. Oxford University Press, New York. xxiv + 579 pp.
Siniscalchi, C.M., J.R. Ackerfield, and R.A. Folk. 2023. Diversification and biogeography of North American thistles (<i>Cirsium</i>: Carduoideae: Compositae): Drivers of a rapid continent-wide radiation. International Journal of Plant Sciences 184: 322-341.