| Taxon | Cirsium quercetorum |
| group | Eudicots |
| Family | Asteraceae |
| Family common name(s) | composite; composita; comp; aster; asterwort; asterworts; sunflower; daisy; dandelion |
| Genus common name(s) | cirsium; thistle; true thistle; plume thistle; plume-thistle |
| Species common name(s) | brownie thistle; Alameda County thistle; Alameda Co thistle |
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| Common name(s) specific to synonym; taxon noted in brackets | Walker's thistle [var. walkerianum] |
| Common name(s) generally applied to other taxa or multiple taxa | brownies is applied to taxa in multiple families |
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| Notes | Walker is a proper name, so upper case preferable; Walkers is an error |
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