The relation of the glossae breviores of Placidus, or rather Pseudo–Placidus, to Festus1 epitome of Verrius has been the subject of much discussion; but after Karl's detailed examination inDe Placidi Glossis , the view has generally prevailed that Ps.–Plac. is not dependent on Festus, and that any similarities between them are referable to the use of similar sources by Verrius and our compiler.

The Dative or Ablative of this ‘plurale tantum’ was used by one of the earlier Republican writers. It is quoted by Ps.-Placidus from a MS. which had the marginal note ‘capillis muliebribus ante, id est a fronte, pendentibus.’ These marginal notes were often direct traditions from the earliest glossographi, the ‘glossematum scriptores,’ who provided material also for Varro and Verrius Flaccus, either directly or through the writings of earlier grammatici.