Pollen morphology of Lecythidaceae in Southeast Asia
DOI:
https://doi.org/10.20531/tfb.2019.47.1.09Keywords:
Barringtonia, Brazil nut family, Careya, Chydenanthus, Planchonia, pollen, taxonomyAbstract
The pollen morphology of four genera and 33 taxa of Lecythidaceae in Southeast Asia was investigated, including 26 taxa of Barringtonia, one taxon each of Careya and Chydenanthus, and five taxa of Planchonia to determine which, if any, taxonomically important characters were present and the implications they have for the systematics of the family. Acetolysed and unacetolysed pollen samples were investigated using light and scanning electron microscopy (SEM). The pollen grains were found to be monads, radially symmetrical, isopolar, small to medium-sized, syntricolpate or syntricolporate, prolate spheroidal, oblate spheroidal, subprolate, suboblate or spherical in shape with marginal ridges. Marginal grooves and polar cushions are commonly present in most species. The polar ectoaperture may be open or sealed. The mesocolpial sculpturing is perforate-reticulate. The colpial surface is smooth, with sparsely or densely scattered verrucae-gemmae and with clavate to pilate elements scattered or aligned in longitudinal rows. The results indicated that pollen morphological characters can be used for identification and classification of some closely related species in the genus Barringtonia.
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References
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________. (2003). An update of the Angiosperm Phylogeny Group classification for the orders and families of flowering plants: APG II. Botanical Journal of the Linnean Society 141: 399–436.
________. (2016). An update of the Angiosperm Phylogeny Group classification for the orders and families of flowering plants: APG IV. Botanical Journal of the Linnean Society 181: 1–20.
Erdtman, G. (1952). Pollen morphology and plant taxonomy: Angiosperms. Almquist & Wiksell, Stockholm.
________. (1960). The acetolysis method: a revised description. Svensk Botanisk Tidskrift 54: 561–564.
________. (1966). Pollen morphology and plant taxonomy: Angiosperms. Hafner Publishing, New York.
Hesse, M., Zetter, R., Halbritter, H., Weber, M., Buchner, R., Frosch-Radivo, A. & Ulrich, S. (2009). Pollen terminology: an illustrated handbook. Springer, Wien & New York.
John, L. & Kuriakose, M.E. (2012). A morphological analysis of south Indian Lecythidaceae. International Journal of Current Research 4: 4–7.
Mori, S.A. & Prance, G.T. (1990). Lecythidaceae—part II: the zygomorphic-flowered New World genera (Couroupita, Corythophora, Bertholletia, Couratari, Eschweilera, & Lecythis). Flora Neotropica Monograph 21 (II). The New York
Botanical Garden, New York, pp. 1–373.
Mori, S.A., Tsou, C.H., Wu, C.C., Cronholm, B. & Anderberg, A.A. (2007). Evolution of Lecythidaceae with an emphasis on the circumscription of Neotropical genera: information from combined ndhF and trnL-F sequence data.
American Journal of Botany 94: 289–301.
Mori, S.A., Kiernan, E.A., Smith, N.P., Kelley, L.M., Huang, Y.-Y., Prance, G.T. & Thiers, B. (2017). Observations on the phytogeography of the Lecythidaceae clade (Brazil nut family). Phytoneuron 30: 1–85.
Muller, J. (1972). Pollen morphology evidence for subdivision and affinities of Lecythidaceae. Blumea 20: 350−355.
_______. (1973). Pollen morphology of Barringtonia calyptrocalyx K.Sch. (Lecythidaceae). Grana 13: 29−44.
________. (1979). Pollen. In: G.T. Prance & S.A. Mori. Lecythidaceae. Part I, The actinomorphic flowered New World Lecythidaceae (Asteranthos, Gustavia, Grias, Allantoma & Cariniana). Flora Neotropica Monograph 21. The New York
Botanical Garden, New York, pp. 72–76.
Payens, J.P.D.W. (1967). A monograph of the genus Barringtonia (Lecythidaceae). Blumea 15: 158–263.
Prance, G.T. (2012). A revision of Barringtonia (Lecythidaceae). Allertonia 12: 1–164.
Prance, G.T. & Kartawinata, E.K. (2013). Lecythidaceae. In: H.P. Nooteboom & P.C. van Welzen (eds.), Flora Malesiana 21, pp. 1–118. Naturalis Biodiversity Center, Leiden.
Prance, G.T. & Mori, S.A. (1979). Lecythidaceae—part I: the actinomorphic-flowered New World Lecythidaceae (Asteranthos, Gustavia, Grias, Allantoma, & Cariniana). Flora Neotropica 21. The New York Botanical Garden, New York, pp. 1–270.
________. (2004). Lecythidaceae. In: K. Kubitzki (ed.), The families and genera of vascular plants 6, pp. 221–232. Springer-Verlag, Berlin & Heidelberg.
Reveal, J.L. & Chase, M.W. (2011). APG III: bibliographical information and synonymy of Magnoliidae. Phytotaxa 19: 71–134.
Schönenberger, J., Anderberg, A.A. & Sytsma, K.J. (2005). Molecular phylogenetics and patterns of floral evolution in the Ericales. International Journal of Plant Sciences 166: 265–288.
Thammarong, W. (2017). Systematics of Lecythidaceae in Southeast Asia. Ph.D. Dissertation. Khon Kaen University, Khon Kaen.
Thammarong, W., Chantaranothai, P. & Pornpongrungrueng, P. (2015). A new species of Barringtonia (Lecythidaceae) from Thailand and taxonomic notes on B. schmidtii. Phytotaxa 239: 73–81.
Thiers, B. (2018, continuously updated). Index Herbariorum: a global directory of public herbaria and associated staff. New York Botanical Garden. Available from https://sweetgum.nybg.org/ih/. [accessed 17 March 2018].
Tsou, C.H. (1994). The classification and evolution of pollen types of Planchonioideae (Lecythidaceae). Plant Systematics and Evolution 189: 15–27.
Walker, J.W. & Doyle, J.A. (1975). The bases of angiosperm phylogeny: palynology. Annals of the Missouri Botanical Garden 62: 664–723.
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Published
2019-04-17
How to Cite
Thammarong, W., Chantaranothai, P., Parnell, J. A., Hodkinson, T. R., & Pornpongrungrueng, P. (2019). Pollen morphology of Lecythidaceae in Southeast Asia. Thai Forest Bulletin (Botany), 47(1), 55–68. https://doi.org/10.20531/tfb.2019.47.1.09
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