Pakaraimaea (incertis sedis in Cistaceae)
Based on the finding that the analysis of plastid DNA sequences placed Pakaraimaea Maguire & P.S. Ashton – a monospecific genus formerly classified in Dipterocarpaceae – as sister to Cistaceae (Ducousso et al. 2004, Heckenhauer et al. 2017), APG IV (2016) suggested inclusion of Pakaraimaea in an expanded Cistaceae. This suggestion has not been followed by Stevens (2001 onwards) and is not followed here because of substantial morphological and ecological differences between Pakaraimaea and Cistaceae (Heckenhauer et al. 2017). Instead, Pakaraimaea is deposited as a genus incertis sedis in Cistaceae. Family status for Pakaraimaea had been suggested by Kostermans (1985).
Text by: Joachim W. Kadereit
References
- Ducousso, M., Béna, G., Bourgeois, C., Buyck, B., Eyssartier, G., Vincelette, M., Rabevohitra, R., Randrihasipara, L., Dreyfus, B., Prin, Y. (2004). The last common ancestor of Sarcolaenaceae and Asian dipterocarp trees was ectomycorrhizal before the India-Madagascar separation, about 88 million years ago. Molecular Ecology, 13: 231–236. doi: 10.1046/j.1365-294X.2003.02032.x
- Heckenhauer J., Samuel R., Ashton P.S., Turner, B., Barfuss, M.H.J., Jang, T.S., Temsch, E.M., Mccann J., Salim K., Attanayake A.M.A.S., Chase, M.W. (2017). Phylogenetic analyses of plastid DNA suggest a different interpretation of morphological evolution than those used as the basis for previous classifications of Dipterocarpaceae (Malvales), Botanical Journal of the Linnean Society, Volume 185, Issue 1, Pages 1–26, https://doi.org/10.1093/botlinnean/box044
- Kostermans, A.J.G.H. (1985). Family status for the Monotoideae Gilg and the Pakaraimoideae Ashton, Maguire and De Zeeuw (Dip- terocarpaceae). Taxon, 34: 426–435. https://doi.org/10.2307/1221209
- Stevens, P. F. (2001 onwards). Angiosperm Phylogeny Website. Version 14, July 2017 [and more or less continuously updated since].
Foto: Pakaraimaea Maguire & P.S. Ashton © Ramón Vilalta