A new species of Senecio from New ZealandJournal Paper
Sykes, W.R., 1987, New Zealand journal of botany. Expand
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- Author: Sykes, W.R.
Ipomoea pres-caprae (L.) R. Br. spp. brasiliensis (L.) Ooststr in the New Zealand botanical regionJournal Paper
Sykes, W.R., 1970, New Zealand Journal of Botany. Expand
Kermadec Islands Flora, an annotated check list
Sykes, W.R., 1977. Expand
Naturalised Pteridophytes, Gymnosperms and Dicotyledons
Webb, C.J.; Sykes, W.R.; Garnock-Jones, P.J., 1988. Expand
Threatened local plants of NZ: A revised checklistOther Publication
Given, D.R.; Sykes, W.R.; Williams, P.A.; Wilson, C.H.. Expand
Vascular flora of Norfolk Island: Some additional taxonomic notesJournal Paper
de Lange, P.J.; Gardner, R.O.; Sykes, W.R.; Crowcroft, G.M.; Cameron, E.K.; Stalker, F.; Christian, M.L., 2005, New Zealand Journal of Botany. Expand