Threatened and uncommon plants of New Zealand [1999]Journal Paper
de Lange, P.J.; Heenan, P.B.; Given, D.R.; Norton, D.A.; Ogle, C.C.; Johnson, P.N.; Cameron, E.K., 1999, New Zealand Journal of Botany. Expand
de Lange, P.J.; Heenan, P.B.; Given, D.R.; Norton, D.A.; Ogle, C.C.; Johnson, P.N.; Cameron, E.K., 1999, New Zealand Journal of Botany. Expand
de Lange, P.J.; Norton, D.A.; Heenan, P.B.; Courtney, S.P.; Molloy, B.P.J.; Ogle, C.C.; Rance, B.D.; Johnson, P.N.; Hitchmough, R., 2004, New Zealand Journal of Botany. Expand
Johnson, P.N., 1975, New Zealand journal of botany. Expand
Johnson, P.N; Partridge, T.R., 1998, Science for Conservation. Expand
Johnson, P.N.; Partridge, T.R., 1999. Expand
Johnson, P., 2004. Expand
Johnson, P; Brooke, P., 1989. Expand
Johnson, P.J; Gerbeaux, P., 2004. Expand