The Coffee Atlas of Ethiopia maps the coffee landscape of Ethiopia, showing where coffee is (and could be) farmed, and the location of wild Arabica coffee forests.
Gingers of Peninsular Malaysia and Singapore is a nicely illustrated study of the many species found in the Malesian area.
Docks and Knotweeds of Britain and Ireland includes descriptions of 83 species in 11 genera.
Gentians of Britain and Ireland includes an introduction, identification guidance and keys, accounts of the 18 species and 4 hybrids.
Taschenlexikon der Gehölze - Ein botanisch-ökologischer Exkursionsbegleiter
Strelitzias of the World is an interesting botanical history of the entire plant family containing 8 species.
