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↳ Plants (Plantae) › Flowering Plants (Anthophyta) › Dicots (Dicotyledoneae) › Aster/Sunflowers (Asterales) › Aster/Sunflowers (Asteraceae) › Joanna's thistle (Cirsium joannae)

Joanna's thistle (Cirsium joannae)

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Photo by Darrin Gobble; Darrin Gobble; Darrin Gobble; Darrin Gobble
Darrin Gobble iNaturalist photo; Darrin Gobble iNaturalist photo; Darrin Gobble iNaturalist photo; Darrin Gobble iNaturalist photo

Joanna's thistle
Joanna's thistle (Cirsium joannae)

Photo by Darrin Gobble; Darrin Gobble; Darrin Gobble; Darrin Gobble
Darrin Gobble iNaturalist photo; Darrin Gobble iNaturalist photo; Darrin Gobble iNaturalist photo; Darrin Gobble iNaturalist photo

Cirsium joannae

NatureServe conservation status

Global (G-rank): G1
State (S-rank): S1

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Phenology

Flowering late summer in August and September.

Diagnostic characteristics

Cirsium joannae is very similar and often co-occurs with C. calcareum and may even be a large-leafed variety of this species. However, it appears that the ascending, thickened, and campanulate spine bases are unique to this species. C. joannae also has shortly bearded connate anthers bases.

Species range

Joanna’s thistle is endemic to southwestern Utah in Zion National Park.

Threats or limiting factors

Threats are unknown.

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Multicellular organisms that are autotrophic or make complex carbohydrates from basic constituents. Most use photosynthesis.

Flowering plants that produce seeds enclosed in an ovary

Multicellular organisms that develop from the fertilization of an egg by a sperm. Heterotrophic - obtain food by ingestion.

Have skulls and backbones.

Cold blooded, lay eggs on land

Have feathers and lay eggs

Invertebrates with an exoskeleton, jointed appendages, and segmented bodies

Animals having 3 pair of legs, 3 body sections, generally 1 or 2 pair of wings, 1 pair of antennae.

Soft bodied animals with an internal or external shell and a toothed tongue or radula. Have a mantle that lines and secretes the shell and a muscular foot that allows for movement.

Two hinged lateral shells and a wedged shaped "foot". Bivalves lack tentacles and a head.

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