Can't recruit some Spartan units

[FaceDancer]

First time I'm seeing something like that in DeI. I'm wondering why I cant recruit any units of phalangitai. In recruiting options some of possible choices are blackouted. Do I need some specific technology or reforms to do it? Its rather strange for me, because Epirus and Macedon got phalangites and I cant even recruit Perioikoi Phalangites.

[Augustusng]

Only the successors get access to pikemen from the start. For the other Greek factions, you'll need Thureos reforms.

[FaceDancer]

Thanks for clearing it up for me. Now I know that I'm not doing anything wrong and can patiently wait for the reforms.