P. F.  Stevens, ?Genera, what and why - some thoughts?, Australian Systematic Botany Society Newsletter, vol. 53, pp. 31-38, 1987.

P. F.  Stevens, ?Nomenclatural stability, taxonomic instinct, and flora writing - a recipe for disaster?, in The plant diversity of Malesia, P.  Baas, Kalkman, K., and Geesink, R., Eds. Dordrecht: Kluwer, 1990, pp. 387-410.

P. F.  Stevens, ?Character States, Morphological Varation, and Phylogenetic Analysis: A Review?, Systematic Botany, vol. 16, pp. 553-583, 1991.

P. F.  Stevens, ?What kind of classifification should the practising taxonomist use to be saved?, in Plant Diversity in Malesia III, J.  Dransfield, Coode, M. J. E., and Simpson, D. A., Eds. Kew: Royal Botanic Gardens, 1995, pp. 295-319.

P. F.  Stevens, ?J.D.Hooker, George Bentham, Asa Gray and Ferdinand Mueller on species limits in theory and practice: a mid-nineteenth-centurydebate and its repercussions?, Historical Records of Australian Science, vol. 11, pp. 345-370, 1997.

P. F.  Stevens, ?Evolutionary polarity of character states?, Annual Review of Ecology and Systematics, vol. 11, pp. 333-358, 1980.

P. F.  Stevens, ?Homology and phylogeny:Morphology and systematics?, Systematic Botany, vol. 9, pp. 395-409, 1984.

P. F.  Stevens, ?Metaphors and typology in the development of botanical systematics 1690-1960, or the art of putting new wine into old bottles?, Taxon, vol. 32, pp. 169-211, 1984.

P. F.  Stevens, ?The genus concept in practice - but for what practice?, Kew Bulletin, vol. 40, pp. 457-465, 1985.

P. F.  Stevens, ?Evolutionary classification in botany, 1960-1985?, Journal of the Arnold Arboretum, vol. 67, pp. 313-339, 1986.

W. S.  Judd, Campbell, C. S., Kellogg, E. A., Stevens, P. F., and Donoghue, M. J., Plant Systematics: A Phlogenetic Approach. Sinauer Associates, 1999.