Research Paper

Phyllanthus coi (Phyllanthaceae), a new herbaceous species from the Philippines

Ming-Jou Wu, Ulysses Ferreras and Yen-Jui Chen

Published on: 13 November 2017

Page: 375 - 380

DOI: 10.6165/tai.2017.62.375

Abstract

Phyllanthus coi M.J. Wu, Ferreras & Y.-J. Chen, a new species from Benguet Province, Island of Luzon, the Philippines, is described and illustrated. Compared to its congeners in the same section, P. coi can be differentiated by having long plagiotropic branchlets with up to 30 leaves per side, seeds with sharp honey-comb-like ridges on the dorsal side, and three free styles that are not lying flat on the top of the ovary. The floral, seed and some vegetative features that distinguish this new species from its nearest morphologically related species, P. erythrotrichus C.B. Rob., P. urinaria L. and P. hookeri Müll. Arg. are provided.

Keyword: Euphorbiaceae, New species, Philippines, Phyllanthaceae, Phyllanthus, Section Urinaria, Subsection Benguetensis

Literature Cited

Airy Shaw H.K. 1983. An alphabetical enumeration of the Euphorbiaceae of the Philippines Islands.Royal Botanic Gardens, Kew.

Chen, Y.-J. 2009. A Taxonomic Study of Phyllanthus L. (Phyllanthaceae; Euphorbiaceae sensu lato) in the Philippines. Thesis National Dong Hwa University, Hualien (in Chinese).

Chen, Y.-J., S.-H. Chen, T.-C. Huang and M.-J. Wu. 2009. Pollen morphology of Philippine species of Phyllanthus (Phyllanthaceae; Euphorbiaceae sensu lato). Blumea 54(1): 47
DOI: 10.3767/000651909X474087View Article Google Scholar

Govaerts, R., D.G. Frodin, and A. Radcliffe-Smith. 2000. World checklist and bibliography of Euphorbiaceae 4. Royal Botanic Gardens, Kew.

Hoffmann, P.,A.J.M.Baker, D.A.Madulid, and J.Proctor. 2003. Phyllanthusbalgooyi (Euphorbiaceae s. l.), anew nickel-hyperaccumulating species from Palawan and Sabah. Blumea 48(1): 193-199.
DOI: 10.3767/000651903X686178View Article Google Scholar

Merrill E.D. 1923. An enumeration of Philippine flowering plants 2: 391-396. Bureau of Printing, Manila.
DOI: 10.5962/bhl.title.49412View Article

Rossignol, L., M Rossignol and R Haicour. 1987. A systematic revision of Phyllanthus subsection Urinaria (Euphorbiaceae). Am. J. Bot. 74(12): 1853-1862.
DOI: 10.2307/2443967View Article Google Scholar

Webster,G.L. 1955. Studies of the Euphorbiaceae, Phyllanthoideae I. Taxonomic notes on the West Indian species of Phyllanthus. Contri. Gray Herb. 176: 45-63.

Webster, G.L. 1956. A monographic study of the West Indian species of Phyllanthus. J. Arnold. Arbor. 37: 91-122, 217-262, 340-358.
DOI: 10.5962/bhl.part.25737View Article Google Scholar

Webster, G.L. 1957. A monographic study of the West Indian species of Phyllanthus. J. Arnold. Arbor. 38: 170-198.
DOI: 10.5962/bhl.part.9102View Article Google Scholar

Wu, M.-J., T.-C. Huang, C.-C. Liu, Y.-J. Chen, Y.-S. Chang, C.-L. Hsu, S.-Y. Wu, A.-Y. Tseng, Y.-C. Chang, C.-C. Liu and A. Kaewmuan. 2016. Pollen Morphology and Taxonomy in Malesian Phyllanthus (Phyllanthaceae) J. Jap. Bot. 91, Suppl.: 257-292.