Okaia flat, Otago Peninsula : Botanical values and grazingJournal Paper
Johnson, P.N., 1993, Conservation Advisory Science Notes. Expand
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Pingao on Otago Peninsula: botanical reportDOC Publication
Johnson, P.N., 1993. Expand
Portobello Road vegetation management
Johnson, P.N., 1989, Botany Division, DSIR. Expand
Stewart Island land management study - botanical values
Johnson, P.N., 1977, DSIR Botany Division Report. Expand
Succession and dynamics of gorse (Ulex europeaus L.) communities in the Dunedin Ecological District, South Island, New ZealandJournal Paper
Lee, W.G.; Allen, R.B.; Johnson, P.N., 1986, New Zealand Journal of Botany. Expand
The concluding chapter: recircumscription of Goodenia (Goodeniaceae) to include four allied genera with an updated infrageneric classificationJournal Paper
Shepherd, K.A.' Lepschi, B.J.; Johnson, E.A.; Gardner, A.G.; Sessa, E.B.; Jabaily, R.S., 2020, PhytoKeys. Expand
Threatened and local plant lists (1995 Revision)Popular Article
Cameron, E.K.; de Lange, P.J.; Given, D.R.; Johnson, P.N.; Ogle, C.C., 1995, New Zealand Botanical Society Newsletter. Expand
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
Threatened and uncommon plants of New Zealand [2004]Journal Paper
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
Vegetation and flora of the Solabder Islands, Southern New ZealandJournal Paper
Johnson, P.N., 1975, New Zealand journal of botany. Expand