Interactive key to Genera of Euphorbiaceae s.l., Salicaceae and Achariaceae

Genera of Euphorbiaceae Richeria Grandis female inflorescenceCurrent version. The current version of the Key was developed as a special joint project between Emma McLarnon (BSc Biology, Leeds University, 2008 – 2012; work placement at Kew 2010 – 2011) and the Malpighiales Team at Kew (Gill Challen, Sue Zmarzty).

Taxonomic Scope: all genera of Achariaceae, Centroplacaceae Euphorbiaceae, (Flacourtiaceae), Gerrardinaceae, Pandaceae, Peraceae, Phyllanthaceae, Picrodendraceae, Putranjivaceae, Salicaceae, (Samydaceae). Gerrardinaceae (Huerteales) is also included because its single genus, Gerrardina, has only recently been excluded from Salicaceae. Flacourtiaceae is not recognised, its genera now belong to Achariaceae and Salicaceae. Samydaceae is not recognised.
Neotropical and subtropical Euphorbiaceae s.l. Parts of the Key treating neotropical (and subtropical) Euphorbiaceae s.l. have been upgraded and link to the Malpighiales Scratchpad, which provides genus descriptions and image galleries. 

Taxonomic standards: Angiosperm Phylogeny Group 3 (APG 3;; World Checklist of Selected Families (; for Centroplacaceae, Euphorbiaceae, Pandaceae, Peraceae, Phyllanthaceae, Picrodendraceae and Putranjivaceae).

Geographic standard: Brummitt, R.K. 2001 onwards. World Geographical Scheme for Recording Plant Distributions edn 2. International Working Group on Taxonomic Databases For Plant Sciences (TDWG). Hunt Institute for Botanical Documentation

Carnegie Mellon University, Pittsburgh.  (

Software: Lucid3, version 3.5; Lucid Translator.

Authors: Emma McLarnon and the Malpighiales Team at Kew (Gill Challen, Sue Zmarzty)