primula

Concise Oxford English Dictionary © 2008 Oxford University Press:
primula /ˈprɪmjʊlə/

▶noun a plant of a genus that includes primroses, cowslips, and polyanthuses. [Genus Primula.]

– derivatives
primulaceous adjective.

– origin mod. L., from med. L., fem. of primulus, dimin. of primus ‘first’.