Same entry in Photius lambda306 Theodoridis.
[1] Plato, Laws 12.947D (on the construction of a tomb for a Scrutineer), where in fact the reading is in doubt: poti/mwn, as here (and in Photius), or proti/mwn ("superior, choice"). See web address 1.
[2] As already indicated in the headword, the obvious translation of li/qwn poti/mwn -- taking that to be the correct reading -- is "of porous stones". But pw=ros (pi 2181), mentioned here, was in fact a broadbrush term for ordinary, locally-available stones, usually limestone. See generally R.E. Wycherley, The Stones of Athens (Princeton 1978) 270-2.