opicum (Trich.), [22]

opimus (Cort.), [185]

opiparia (Cli.), [81]

orbicularis (Col.), [51]

orbiformis (Cli.), [89]

orcella (Clitop.), [134]

orcelloides (Pax.), [139]

oreades (Mar.), [57]

oreinum (Trich.), [25]

orellanus (Cort.), [190]