Articles
Hedyotis hamiguitanensis (Rubiaceae: Spermacoceae), a new species from Mt. Hamiguitan, Davao Oriental, Philippines and its systematic position in Hedyotis
Published 2021-09-07
Keywords
- Hedyotis,
- Rubiaceae,
- Philippines,
- taxonomy
How to Cite
Santor, P. J. R., Santiago, D. D. B., Mataga, C. J. V., Gabriel, E. S., & Alejandro, G. J. D. (2021). Hedyotis hamiguitanensis (Rubiaceae: Spermacoceae), a new species from Mt. Hamiguitan, Davao Oriental, Philippines and its systematic position in Hedyotis. Webbia, 76(2), 195–202. https://doi.org/10.36253/jopt-10651
Abstract
Hedyotis hamiguitanensis, from Mt. Hamiguitan, Davao Oriental, Philippines, is described, illustrated, and compared with two similar species, H. whiteheadii and H. schlechteri. This species is distinguished from congeneric Philippine species by its 5–12 cm long, compound, umbellate inflorescences, pendulous flowers, lanceolate to oblanceolate, thick, scabrid leaf blades with revolute margins. Its phylogenetic systematic position within the tribe Spermococeae is determined with a phylogenetic analysis using chloroplast (rps16, petD) and nuclear ribosomal (ITS, ETS) nucleotide sequence data.
References
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Beentje, H. 2010. The Kew plant glossary: An illustrated dictionary of plant terms. Royal Botanic Gardens, Kew, UK. p. 170.
Bremer, B. 1996. Phylogenetic studies within the Rubiaceae and relationships to other families based on molecular data. Opera Bot. 7: 33–50.
Bremer, B, & Manen, JF. 2000. Phylogeny and classification of the subfamily Rubioideae (Rubiaceae). Plant Syst Evol. 225 (1–4): 43–72. https://doi.org/10.1007/BF00985458.
Groeninckx, I, Dessein, S, Ochoterena, H, Persson, C, Motley, TJ, Kårehed, J, Bremer, B, Huysmans, S, Smets, E. 2009. Phylogeny of the Herbaceous Tribe Spermacoceae (Rubiaceae) Based on Plastid DNA Data. Ann Mo Bot Gard 96(1): 109–132. 109–132. https://doi.org/10.3417/2006201.
Guo, X, Wang, RJ, Simmons, MP, But, PPH, & Yu, J. 2013. Phylogeny of the Asian Hedyotis-Oldenlandia complex (Spermacoceae, Rubiaceae): Evidence for high levels of polyphyly and the parallel evolution of diplophragmous capsules. Mol Phylogenet Evol. 67(1): 110–122. https://doi.org/10.1016/j.ympev.2013.01.006.
Guoy, M, Guindon, S, & Gascuel, O. 2010. SeaView version 4: a multiplatform graphical user interface for sequence alignment and phylogenetic tree building. Mol Biol Evol. 27(2): 221–224. https://doi.org/doi:10.1093/molbev/msp259.
IUCN Standards and Petitions Subcommittee. 2019. Guidelines for using the IUCN Red List categories and criteria Version 14. Standards and Petitions Subcommittee. [accessed 2020 December 1]. https://www.iucnredlist.org/resources/redlistguidelines.
Kårehed, J, Groeninckx, I, Dessein, S, Motley, TJ, & Bremer, B. 2008. The phylogenetic utility of chloroplast and nuclear DNA markers and the phylogeny of the Rubiaceae tribe Spermacoceae. Mol Phylogenet Evol. 49(3): 843–866. https://doi.org/10.1016/j.ympev.2008.09.025.
Katoh, K, & Standley, DM. 2013. MAFFT multiple sequence alignment software version 7: Improvements in performance and usability. Mol. Biol Evol. 30(4): 772–780. 780. https://doi.org/doi:10.1093/molbev/mst010.
Linnaeus, C. 1753. Species Plantarum. 1. Stockholm: Laurentius Salvii, p. 560.
Merill, E.D. 1907. The Philippine plants collected by the Wilkes United States Exploring Expedition. Philipp J Sci. Section C, Botany. Manila. 2: 303.
Merrill, E. D., & Perry, L. M. 1945. Plantae Papuanae Archboldianae XV. Journal of the Arnold Arboretum 26: 1.
Miller, M. A., Pfeiffer, W., & Schwartz, T. 2010. Creating the CIPRES Science Gateway for inference of large phylogenetic trees. In Gateway Computing Environments Workshop (GCE), p. 1–8.
Neupane, S., Dessein, S., Wikström, N., Lewis, P. O., Long, C., Bremer, B., & Motley, T. J. 2015. The Hedyotis-Oldenlandia complex (Rubiaceae: Spermacoceae) in Asia and the Pacific: Phylogeny revisited with new generic delimitations. Taxon. 64(2): 299–322. https://doi.org/10.12705/642.8.
Pelser, P. B., Barcelona, J. F., & Nickrent, D. L. 2011. Co’s Digital Flora of the Philippines. [accessed 2019 July 23]. http://philippineplants.org/Families/Pandanaceae.html.
Ronquist, F., Teslenko, M., Van Der Mark, P., Ayres, D. L., Darling, A., Höhna, S., Larget, B., Liu, L., Suchard, M.A., Huelsenbeck, J. P. 2012. MrBayes 3.2: Efficient bayesian phylogenetic inference and model choice across a large model space. Syst Biol. 61(3): 539–542. https://doi.org/10.1093/sysbio/sys029.
Terrell, E. E., & Robinson, H. 2003. Survey of asian and Pacific species of Hedyotis and Exallage (Rubiaceae) with nomenclatural notes on Hedyotis types. Taxon. 52(4): 775–782.
Wikström, N., Neupane, S., Kårehed, J., Motley, T. J., & Bremer, B. 2013. Phylogeny of Hedyotis L. (Rubiaceae: Spermacoceae): Redefining a complex Asian-Pacific assemblage. Taxon. 62(2): 357-374. https://doi.org/10.12705/622.2.