Agarwal,. (1976). Queretaroic (30) caffeate and other constituents of Melianthus major. Phytochemistry, 15(3). http://doi.org/10.1016/S0031-9422(00)86844-2

Beppu,, Koike,, Shimpo,, Chihara,, Hoshino,, Ida,, & Kuzuya,. (2003). Radical-scavenging effects of Aloe arborescens Miller on prevention of pancreatic islet B-cell destruction in rats. Journal Of Ethnopharmacology, 89(1). http://doi.org/10.1016/S0378-8741(03)00268-X (Original work published 11/2003AD)

Lehmann,, Geisshüsler,, & Brenneisen,. (1990). Rapid TLC identification test for khat (Catha edulis). Forensic Science International, 45(1-2). http://doi.org/10.1016/0379-0738(90)90220-S (Original work published 3/1990AD)

Groeneveld, H., Steijl, H., Berg, B., & Elings, J. (1990). Rapid, quantitative HPLC analysis ofAsclepias fruticosa L. andDanaus plexippus L. cardenolides. Journal Of Chemical Ecology, 16(12). http://doi.org/10.1007/BF00982104 (Original work published 12/1990AD)

Viljoen,, Kamatou,, Başer,, Coovadia,, & Özek,. (2010). Rare sesquiterpenes from South African Pteronia species. South African Journal Of Botany, 76(1), 146 - 152. http://doi.org/10.1016/j.sajb.2009.07.012 (Original work published 1/2010AD)

García, A., Bocanegra-García, V., Palma-Nicolás, J. P., & Rivera, G. (2012). Recent advances in antitubercular natural products. European Journal Of Medicinal Chemistry, 49. http://doi.org/10.1016/j.ejmech.2011.12.029 (Original work published 3/2012AD)

Sofowora, A. (1993). Recent trends in research into African medicinal plants. Journal Of Ethnopharmacology, 38(2-3). (Original work published 3/1993AD)

Williams,, Crouch,, & Victor,. (2013). Red Listed medicinal plants of South Africa: Status, trends, and assessment challenges. South African Journal Of Botany, 86, 23 - 35. http://doi.org/10.1016/j.sajb.2013.01.006 (Original work published 5/2013AD)

Van Staden,, Aremu,, & Amoo,. (2013). Regulation of bioactive secondary metabolite production in in vitro-derived greenhouse-grown Aloe arborescens. South African Journal Of Botany, 86. http://doi.org/10.1016/j.sajb.2013.02.125 (Original work published 5/2013AD)

Goldblatt, P. (1998). Reduction of Barnardiella, Galaxia, Gynandriris, Hexaglottis, Homeria, and Roggeveldia in Moraea (Iridaceae: Irideae). Novon, 8(4), 371-377. Retrieved from http://www.jstor.org/stable/3391858 (Original work published 10/1998AD)

Mulholland,, Douwes,, Crouch,, & Edwards,. (2008). Regression analyses of southern African ethnomedicinal plants: informing the targeted selection of bioprospecting and pharmacological screening subjects. Journal Of Ethnopharmacology, 119(3), 356 - 364. http://doi.org/10.1016/j.jep.2008.07.040 (Original work published 10/2008AD)

Staden, J., Jäger, A., Stafford, G., & Pedersen, M. (2008). Review on plants with CNS-effects used in traditional South African medicine against mental diseases. Journal Of Ethnopharmacology, 119(3). (Original work published 10/2008AD)

Williams,, Witkowski,, & Balkwill,. (2007). Relationship between bark thickness and diameter at breast height for six tree species used medicinally in South Africa. South African Journal Of Botany, 73(3), 449 - 465. http://doi.org/10.1016/j.sajb.2007.04.001 (Original work published 7/2007AD)

Peterson,, Maitai,, & Sparber,. (1980). Relative potencies of two phenylalkylamines found in the abused plant , khat. Life Sciences, 27(22). http://doi.org/10.1016/0024-3205(80)90496-8 (Original work published 12/1980AD)

Russo,, Castellano,, & Martelli,. (1979). Rhabdovirus-Iike Particles in English Ivy (Hedera helix) and Ivy-leafed Geranium (Pelargonium peltatum). Journal Of Phytopathology, 96(2). http://doi.org/10.1111/j.1439-0434.1979.tb01630.x (Original work published 10/1979AD)