[Botany • 2010] An Extended Phylogeny of Pseuduvaria (Annonaceae) with Descriptions of Three New Species and a Reassessment of the Generic Status of Oreomitra | 3 new Pseuduvaria from Southeast Asia • P. fragrans, P. gardneri from Thailand and P. glossopetala from Malaysia

Abstract

Three new species of Pseuduvaria (Annonaceae) from Peninsular Thailand and Peninsular Malaysia are described and named as P. fragrans, P. gardneri, and P. glossopetala. A recent molecular phylogenetic study, based on 51 species (including P. fragrans), elucidated the evolutionary relationships within the genus. The present study includes P. gardneri and P. glossopetala in the phylogenetic analyses using maximum likelihood and Bayesian inference methods, based on five chloroplast regions (psbA—trnH spacer, trnL—F, matK, rbcL, and atpB—rbcL spacer). The new nomenclatural combination Pseuduvaria phuyensis is also validated in accordance with the phylogenetic analyses which show that Craibella phuyensis and Pseuduvaria form a well-supported monophyletic clade. The new species and new nomenclature combination bring the total number of species in Pseuduvaria to 56. The taxonomic status of the enigmatic monotypic genus Oreomitra from New Guinea is furthermore evaluated, and the name shown to be synonymous with Pseuduvaria.

Keywords: classification, New Guinea, Peninsular Malaysia, systematics, taxonomy, Thailand

Figs . 3–8. Inflorescences and fruits of Pseuduvaria fragrans and P. gardneri.

Pseuduvaria fragrans Y. C. F. Su, Chaowasku & R. M. K. Saunders, sp. nov.

—TYPE: THAILAND. Klong Phanom National Park, Surat Thani Province, 14 Nov 2006, T. Chaowasku 27 (holotype: L!; isotype: HKU!).

Species Pseuduvariae multiovulatae (C. E. C. Fischer) J. Sinclair similis, sed pedicellis florum et fructuum brevissimis (3–10 mm et ca. 12 mm longis), petalis exterioribus minoribus (3–4 mm longis), petalis interioribus minoribus (4.5–5.5 mm longis), stamina parvis (ca. 24), carpellis parvis (ca. 3) parvis, monocarpiis sessilibus, et internodiis rhachium longioribus (ca. 10 mm) differt.

Pseuduvaria gardneri Y. C. F. Su, Chaowasku & R. M. K. Saunders, sp. nov.

—TYPE: THAILAND. Khao Nom Phrai, Huai Yot, Trang Province, 15 Feb 2006, S. Gardner & P. Sidisunthorn ST2313 (holotype: L!).

Species Pseuduvariae fragrans Y. C. F. Su, Chaowasku & R. M. K. Saunders similis, sed pedunculis florum et fructuum brevissimis (ca. 3–5 mm longis) et petalis interioribus glandulosis solitariis et cordatus differt.

Pseuduvaria glossopetala Y. C. F. Su & R. M. K. Saunders, sp. nov.

—TYPE: PENINSULAR MALAYSIA. Padang Rengas, Gunong Pondok, Perak, 12 Mar 1971, S. C. Chin 875 (holotype: L!; isotype: KEP!).

Species Pseuduvaria gardneri Y. C. F. Su, Chaowasku & R. M. K. Saunders similis, sed petalis interioribus glandibus glossus et basi unguiculata latus differt.

Yvonne C. F. Su, Tanawat Chaowasku, and Richard M. K. Saunders. 2010. An Extended Phylogeny of Pseuduvaria (Annonaceae) with Descriptions of Three New Species and a Reassessment of the Generic Status of Oreomitra. Systematic Botany. 35:1, 30-39 DOI: 10.1600/036364410790862533
researchgate.net/publication/227340152_An_extended_phylogeny_of_Pseuduvaria_%28Annonaceae%29_with_descriptions_of_three_new_species_and_a_reassessment_of_the_generic_status_of_Oreomitra