Natura - nature
   actualia - actual entities
     Mundus Plinius - physical world
       particles
         hadrons - composite particles
           mesons - bosonic hadrons
             charmed, strange mesons
               1.1 D(s)+
               1.2 D(s)-
               2.1 D(s)*+
               2.2 D(s)*-
               3.1 D(s0)*(2317)+
               3.2 D(s0)*(2317)-
               4.1 D(s1)(2460)+
               4.2 D(s1)(2460)-
               5.1 D(s1)(2536)+
               5.2 D(s1)(2536)-
               6.1 D(s2)(2573)+
               6.2 D(s2)(2573)-