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Image of Tracy's Thistle
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Tracy's Thistle

Cirsium tracyi (Rydb.) Petr.

Scientific Names

Preferred Names

Cirsium tracyi (Rydb.) Petr.
Species recognized by EOL Dynamic Hierarchy April 2022
Reference taxon from Synonymic Checklists of the Vascular Plants of the World in Species 2000 & ITIS Catalogue of Life
Cirsium tracyi
Species recognized by wikipedia VI, NCBI, and United States Species List
Cirsium tracyi
Cirsium tracyi (Rydb.) Petr.
Cirsium tracyi (Rydberg) Petrak
Recognized by eFloras
Carduus floccosus
Species recognized by wikidata_hierarchy tar gz
Carduus tracyi
Species recognized by wikidata_hierarchy tar gz
Carduus tracyi Rydb.
Recognized by NMNH type specimens
Carduus tracyi Rydberg
Cirsium tracyi
Recognized by TRY summarized records
Cirsium undulatum (Nutt.) Spreng. var. tracyi (Rydb.) S. L. Welsh
Cirsium undulatum var. tracyi

Alternative Names

Carduus arcuatus Osterh.
Not accepted according to EOL Dynamic Hierarchy April 2022
Reference taxon from Synonymic Checklists of the Vascular Plants of the World in Species 2000 & ITIS Catalogue of Life
Carduus floccosus Rydb.
Not accepted according to EOL Dynamic Hierarchy April 2022
Reference taxon from Synonymic Checklists of the Vascular Plants of the World in Species 2000 & ITIS Catalogue of Life
Carduus tracyi Rydb.
Not accepted according to EOL Dynamic Hierarchy April 2022
Reference taxon from Synonymic Checklists of the Vascular Plants of the World in Species 2000 & ITIS Catalogue of Life
Cirsium arcuatum (Osterh.) Rydb.
Not accepted according to EOL Dynamic Hierarchy April 2022
Reference taxon from Synonymic Checklists of the Vascular Plants of the World in Species 2000 & ITIS Catalogue of Life
Cirsium floccosum (Rydb.) Rydb.
Not accepted according to EOL Dynamic Hierarchy April 2022
Reference taxon from Synonymic Checklists of the Vascular Plants of the World in Species 2000 & ITIS Catalogue of Life
Cirsium undulatum var. tracyi (Rydb.) S. L. Welsh
Not accepted according to EOL Dynamic Hierarchy April 2022
Reference taxon from Synonymic Checklists of the Vascular Plants of the World in Species 2000 & ITIS Catalogue of Life
Carduus arcuatus Osterh.
Carduus floccosus Rydb.
Carduus tracyi Rydb.
Cirsium arcuatum (Osterh.) Rydb.
Cirsium floccosum (Rydb.) Rydb.
Cirsium undulatum var. tracyi (Rydb.) S. L. Welsh
Carduus arcuatus Osterh.
Not accepted according to Dynamic Hierarchy Version 2.2 - Test
Carduus arcuatus Osterh.
Synonym according to Catalogue of Life 7 February 2023
Carduus floccosus Rydb.
Not accepted according to Dynamic Hierarchy Version 2.2 - Test
Carduus floccosus Rydb.
Synonym according to Catalogue of Life 7 February 2023
Carduus tracyi Rydb.
Cirsium acuatum (Osterh.) Petr.
Cirsium acuatum (Osterh.) Petr.
Synonym according to USDA PLANTS images
Cirsium arcuatum (Osterh.) Rydb.
Not accepted according to Dynamic Hierarchy Version 2.2 - Test
Cirsium arcuatum (Osterh.) Rydb.
Synonym according to Catalogue of Life 7 February 2023
Cirsium floccosum (Rydb.) Petr.
Cirsium floccosum (Rydb.) Petr.
Synonym according to USDA PLANTS images
Cirsium floccosum (Rydb.) Rydb.
Not accepted according to Dynamic Hierarchy Version 2.2 - Test
Cirsium floccosum (Rydb.) Rydb.
Synonym according to Catalogue of Life 7 February 2023
Cirsium tracyi (Rydb.) Petr.
Synonym according to USDA PLANTS images
Cirsium undulatum var. tracyi (Rydb.) S. L. Welsh
Cirsium undulatum var. tracyi (Rydb.) S. L. Welsh
Synonym according to Catalogue of Life 7 February 2023

Common Names

English

Tracy's Thistle preferred
Tracy's thistle
Recognized by USDA PLANTS images

Curated hierarchies for Cirsium tracyi (Rydb.) Petr.

EOL Dynamic Hierarchy April 2022

Life
Cellular Organisms
Eukaryota
Archaeplastida
Chloroplastida
Streptophyta
Embryophytes
Tracheophyta
Spermatophytes
Angiosperms
Eudicots
Superasterids
Asterids
Asterales
Asteraceae
Cirsium
395 additional siblings truncated for brevity.
See the resource file for a full list.

Catalogue of Life 7 February 2023

Biota
Plantae
Tracheophyta
Magnoliopsida
Asterales
Asteraceae Dumort.
Carduoideae Cass. ex Sw.
Cirsium Mill.
338 additional siblings truncated for brevity.
See the resource file for a full list.

Dynamic Hierarchy Version 2.2 - Test

Life
Cellular Organisms
Eukaryota
Archaeplastida
Chloroplastida
Streptophyta
Embryophytes
Tracheophyta
Spermatophytes
Angiosperms
Eudicots
Superasterids
Asterids
Asterales
Asteraceae
Cirsium
379 additional siblings truncated for brevity.
See the resource file for a full list.

EOL Dynamic Hierarchy 1.1

Life
Cellular Organisms
Eukaryota
Archaeplastida
Chloroplastida
Streptophyta
Embryophytes
Tracheophyta
Spermatophytes
Angiosperms
Eudicots
Superasterids
Asterids
Asterales
Asteraceae
Cirsium
395 additional siblings truncated for brevity.
See the resource file for a full list.

GBIF classification

Plantae
Tracheophyta
Magnoliopsida
Asterales
Asteraceae
Cirsium Mill.
896 additional siblings truncated for brevity.
See the resource file for a full list.

Integrated Taxonomic Information System (ITIS) Taxonomic Hierarchy

Plantae
Viridiplantae
Streptophyta
Embryophyta
Tracheophyta
Spermatophytina
Magnoliopsida
Asteranae
Asterales
Asteraceae
Cirsium Mill.

NCBI

root
cellular organisms
Eukaryota
Viridiplantae
Streptophyta
Streptophytina
Embryophyta
Tracheophyta
Euphyllophyta
Spermatophyta
Magnoliopsida
Mesangiospermae
eudicotyledons
Gunneridae
Pentapetalae
asterids
campanulids
Asterales
Asteraceae
Carduoideae
Cardueae
Carduinae
Cirsium
Cirsium tracyi (this page)
11 additional siblings truncated for brevity.
See the resource file for a full list.

wikidata_hierarchy tar gz

Biota
Eukaryota
Plantae
Viridiplantae
Embryophyta
Tracheophyta
Spermatophytina
Magnoliophyta
Magnoliopsida
Magnoliidae
Asteranae
Asterales
Asteraceae
Carduoideae
Cynareae
Cirsium
Cirsium tracyi (this page)
1036 additional siblings truncated for brevity.
See the resource file for a full list.

wikidata_hierarchy tar gz

Biota
Eukaryota
Plantae
Viridiplantae
Embryophyta
Tracheophyta
Spermatophytina
Magnoliophyta
Magnoliopsida
Magnoliidae
Asteranae
Asterales
Asteraceae
Carduoideae
Cynareae
Carduus
Carduus tracyi (this page)
448 additional siblings truncated for brevity.
See the resource file for a full list.

wikidata_hierarchy tar gz

Biota
Eukaryota
Plantae
Viridiplantae
Embryophyta
Tracheophyta
Spermatophytina
Magnoliophyta
Magnoliopsida
Magnoliidae
Asteranae
Asterales
Asteraceae
Carduoideae
Cynareae
Carduus
Carduus floccosus (this page)
448 additional siblings truncated for brevity.
See the resource file for a full list.