Plectranthus viphyensis

References

1. [1]Plants of the World online — http://powo.science.kew.org/ ↩︎An on-line database giving detailed descriptions of almost 40,000 species of plants (as of 2018), almost 25,000 images and a list of almost 850,000 plant names. A truly excellent resource and still growing.
2. [2]Mansfeld's Database of Agricultural and Horticultural Plants — http://mansfeld.ipk-gatersleben.de/pls/htmldb_pgrc/f?p=185:3:4292127278597336 ↩︎Terse details of a huge range of useful plants.
3. [3]Plectranthus: A review of ethnobotanical uses — Lukhoba C.W.; Simmonds M.S.J.; Paton A.J. · 2006 ↩︎An excellent guide to the uses of Plectranthus species, giving the basic uses and the literature supporting this.