J. L.  Trusty, Olmstead, R. G., Santos-Guerra, A., Sá-Fontinha, S., and Francisco-Ortega, J., ?Molecular phylogenetics of the Macaronesian-endemic genus Bystropogon (Lamiaceae): palaeo-islands, ecological shifts and interisland colonizations?, Molecular ecology, vol. 14, pp. 1177?89, 2005.

Y.  Wang, Li, D. -hui, and Zhang, Y. -tao, ?[Analysis of ITS sequences of some medicinal plants and their related species in Salvia]?, Yao Xue Xue Bao, vol. 42, pp. 1309?13, 2007.

J. C.  Barber, Francisco-Ortega, J., Santos-Guerra, A., Turner, K. G., and Jansen, R. K., ?Origin of Macaronesian Sideritis L. (Lamioideae: Lamiaceae) inferred from nuclear and chloroplast sequence datasets?, Molecular Phylogenetics and Evolution, vol. 23, pp. 293?306, 2002.

Y.  Zhang, Chen, Y., Zhang, J. - C., Yang, M. - S., Cao, H., and Xiao, P. - G., ?[Correlation between ITS genotype and geographical distribution of Pogostemon cablin]?, Yao Xue Xue Bao, vol. 42, pp. 93?7, 2007.

E. H.  Stukenbrock and Rosendahl, S., ?Distribution of dominant arbuscular mycorrhizal fungi among five plant species in undisturbed vegetation of a coastal grassland?, Mycorrhiza, vol. 15, pp. 497?503, 2005.

D. - S.  Kim, Bae, C. - Y., Jeon, J. - J., Chun, S. - J., Oh, H. Woo, Hong, S. Gyu, Baek, K. - S., Moon, E. Young, and Bae, K. Sook, ?Paenibacillus elgii sp. nov., with broad antimicrobial activity?, Int J Syst Evol Microbiol, vol. 54, pp. 2031?5, 2004.