Genera within a family
primus, = the first, first (properly only when three or more are referred to); first in rank or station, chief, principal, most excellent, eminent, distinguished, noble;
-ula, = diminutive.
primulus, = the first (ante-class); primulum, = at first, first (ante-class).
(originally in the name primula veris, ‘little firstling of spring’, applied by 12th century to the cowslip)
(ld, BL, Ox)
(ld, BL, Ox)