Asteraceae
Alameda County thistle
Cirsium quercetorum
- Family
- Asteraceae
- Genus
- Cirsium
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Common names
By language (1)
- English
- Alameda County thistle
Synonyms
- Carduus quercetorum (A.Gray) Greene
- Cirsium quercetorum var. campylolepis Petr.
- Cirsium quercetorum var. walkerianum (Petr.) Jeps.
- Cirsium quercetorum var. xerolepis Petr.
- Cirsium walkerianum Petr.
- Cnicus quercetorum A.Gray
Characteristics
- Growth habit
- Forb/herb
- Lifespan
- Biennial, Perennial
- In the US and Canada
- Lower 48 states: native
Photos
Photo: Eric in SF, CC BY-SA 3.0, from Wikimedia Commons
More in Cirsium
- Creeping thistleCirsium arvenseAsteraceae
- Spear thistleCirsium vulgareAsteraceae
- Marsh thistleCirsium palustreAsteraceae
- Cabbage thistleCirsium oleraceumAsteraceae
- Dwarf thistleCirsium acauleAsteraceae
- Woolly thistleCirsium eriophorumAsteraceae
- Melancholy thistleCirsium heterophyllumAsteraceae
- Cirsium rivulareAsteraceae
- Meadow thistleCirsium dissectumAsteraceae
- Yellow melancholy thistleCirsium erisithalesAsteraceae
- Cirsium spinosissimumAsteraceae
- Cirsium tuberosumAsteraceae
Sources: classification, synonyms from World Flora Online Plant List (2026-06, CC0 1.0); common names, popularity from Wikidata (2026-10-26, CC0 1.0); common names, US characteristics from USDA PLANTS Database (2025-05-29, CC0 1.0). About our plant data.