SESSION
CHECKLIST
SOURCES
NEWS - FEATURES
Plant Communities: Introduced plant (naturalized)
Synonyms: Carduus undulatus var. canescens Cirsium nebraskense Cirsium nelsonii Cirsium plattense Cirsium undulatum
Counties: Alameda Contra Costa Kern Lassen Los Angeles Modoc Placer Plumas San Bernardino San Diego Shasta Sierra Siskiyou
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