Hazardia rosarica is a species of flowering shrub in the family Asteraceae commonly known as the El Rosario goldenbush.
It is most similar to the polytypic Hazardia squarrosa, whose southern subspecies grindelioides approaches the range of H. rosarica, and both species share a lack of ray flowers.
[4] Hazardia rosarica is a glutinous, fragrant shrub 2–9 dm (7.9–35.4 in) tall, with many erect to ascending branches emerging from a woody base.
[5][4] The leaves range from sessile to subpetiolate, rarely with auriculate-clasping or subclasping bases, and are shaped obovate to spatulate with obtuse to rounded-acute tips.
The type specimen was collected in July of 1967 from a north-facing slope at the Arroyo del Campo Viejo, about 7.2 miles north-northwest of El Rosario in northwestern Baja California.