Grubbia was revised by Sherwin Carlquist in 1977.[8]Grubbia gracilis, Grubbia hirsuta, and Grubbia pinifolia had all been recognized, at least by some authors, at species rank, but Carlquist treated them as subspeciesorvarietiesofGrubbia rosmarinifolia. Some authors had recognized a second genus, Strobilocarpus, in the family Grubbiaceae, but Carlquist assigned its two species, Strobilocarpus rourkei and Strobilocarpus tomentosatoGrubbia.
^Vernon H. Heywood, Richard K. Brummitt, Ole Seberg, and Alastair Culham. 2007. Flowering Plant Families of the World. Firefly Books: Ontario, Canada. ISBN978-1-55407-206-4.
^David J. Mabberley. 2008. Mabberley's Plant-Book third edition (2008). Cambridge University Press: UK. ISBN978-0-521-82071-4
^Klaus Kubitzki. 2004. "Grubbiaceae". pages 199-201. In: Klaus Kubitski (editor). The Families and Genera of Vascular Plants volume VI. Springer-Verlag: Berlin;Heidelberg, Germany.
^Grubbia in International Plant Names Index. (see External links below).
^Umberto Quattrocchi. 2000. CRC World Dictionary of Plant Names volume II. CRC Press: Boca Raton; New York; Washington,DC;, US. London, UK. ISBN978-0-8493-2676-9 (vol. II). (see External links below).
^Sherwin Carlquist. 1977. "A revision of Grubbiaceae". Journal of South African Botany (currently: South African Journal of Botany). 43(2):115-128.
^Qiu-Yun (Jenny) Xiang, David T. Thomas, and Qiao Ping Xiang. 2011. "Resolving and dating the phylogeny of Cornales - Effects of taxon sampling, data partitions, and fossil calibrations". Molecular Phylogenetics and Evolution59(1):123-138. doi:10.1016/j.ympev.2011.01.016
^"Jenny" Qiu-Yun Xiang, Michael L. Moody, Douglas E. Soltis, Chuan Zhu Fan, and Pamela S. Soltis. 2002. "Relationships within Cornales and circumscription of Cornaceae - matK and rbcL sequence data and effects of outgroups and long branches". Molecular Phylogenetics and Evolution24(1):35-57.