JACQ is the jointly administered herbarium management system and specimen database of the following herbaria: ADMONT, B, BAK, BATU, BEOU, BOZ, BP, BRNM, BRNU, CBH, CHER, DR, ERE, FT, GAT, GJO, GZU, HAJB, HAL, HBG, HERZ, JE, KFTA, KIEL, KL, KUFS, LAGU, LECB, LW, LWKS, LWS, LZ, MHES, MJG, MNVD, NBSI, NS, NSK, OLD, PAV, PI, PIAGR, PR, PRC, ROPV, SARAT, SIENA, SPP, SZU, TBI, TGM, TGU, TMRC, TO, TUB, UBT, ULM, UPA, W, WU and WUP.

Listed Acronyms follow the Index Herbariorum Abbreviations. For requests and comments on specimens like identifications, typification, and comments please contact the corresponding Director/Curator listed in the Index Herbariorum.