The Collaborative International Dictionary of English v.0.48:

Consultatory \Con*sult"a*to*ry\
   (k[o^]n*s[u^]lt"[.a]*t[-o]*r[y^]), a.
   Formed by, or resulting from, consultation; advisory.
   --Bancroft.
   [1913 Webster]

WordNet (r) 3.0 (2006):

consultatory
    adj 1: giving advice; "an advisory memorandum", "his function
           was purely consultative" [syn: advisory,
           consultative, consultatory, consultive]