Phylogeny of Miliusa (Magnoliales: Annonaceae: Malmeoideae: Miliuseae), with descriptions of two new species from Malesia

Tanawat Chaowasku,Paul J.A Keßler

doi:10.5852/ejt.2013.54

Tanawat Chaowasku, Paul J.A Keßler

Open Access

https://doi.org/10.5852/ejt.2013.54

Copy DOI

Abstract

The molecular phylogeny of Miliusa (Annonaceae) is reconstructed, with 27 (of ca. 50) species included, using a combination of seven plastid markers (rbcL exon, trnL intron, trnL-F spacer, matK exon, ndhF exon, psbA-trnH spacer, and ycf1 exon) constituting ca. 7 kb. In addition, two new species of Miliusa are described from the Malesian area: M. butonensis sp. nov. from Buton Island, Indonesia and M. viridiflora sp. nov. from Papua New Guinea. The former is included in the molecular phylogenetic analysis. The reconstructed phylogeny corresponds well to the informal morphological grouping proposed earlier. A revised key to 13 Austro-Malesian species of Miliusa is provided.

Highlights

The genus Miliusa Lesch. ex A.DC. (Annonaceae) comprises approximately 50 species of shrubs, or small to large trees, distributed from the Indian subcontinent, southern China and mainland Southeast Asia to Southeast Asian islands, New Guinea and northern Australia (Chaowasku & Keßler 2006)
Clade support: left of slash - parsimony symmetric resampling values corresponding to clades revovered in Bayesian tree; right of slash - Bayesian posterior probabilities
The important features characterizing the M. campanulata group: inner petals that are usually tightly appressed from the base to ± the midpoint at anthesis (Fig. 6D–F), and the M. mollis group: inner petals with crescent-shaped to semicircular glandular structures inside at the base or higher (Figs 3c; 6G–I), are the synapomorphies of clades B and C, respectively

Summary

Introduction

The genus Miliusa Lesch. ex A.DC. (de Candolle 1832) (Annonaceae) comprises approximately 50 species of shrubs, or small to large trees, distributed from the Indian subcontinent, southern China and mainland Southeast Asia to Southeast Asian islands, New Guinea (including D’Entrecasteaux Islands and Louisiade Archipelago) and northern Australia (Chaowasku & Keßler 2006). (de Candolle 1832) (Annonaceae) comprises approximately 50 species of shrubs, or small to large trees, distributed from the Indian subcontinent, southern China and mainland Southeast Asia to Southeast Asian islands, New Guinea (including D’Entrecasteaux Islands and Louisiade Archipelago) and northern Australia (Chaowasku & Keßler 2006). It belongs to the tribe Miliuseae of the subfamily Malmeoideae (Chatrou et al 2012).

Objectives

Methods

Results

Conclusion