Species within a genus

a-, an-, = denotes privative, negative;
a-, = without, not, -less, un-;
stephanos, = that which encircles; a crown, wreath.
(a kind of diadem or coronet, represented in statuary as worn by the goddess Hera and other deities; also worn by military commanders)
-anus, = indicates position, connexion or possession by.
(absence of a crown)
(Ox, LS, BL)