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Australian Systematic Botany Australian Systematic Botany Society
Taxonomy, biogeography and evolution of plants
Table of Contents
Australian Systematic Botany

Australian Systematic Botany

Volume 38 Number 3 2025


Photographs of selected morphological characters of the young leaves and fruit in Melichrus species.

The genus Melichrus has received very little taxonomic attention and treatments have largely disagreed on species delimitation. We present results from in-depth morphometric and molecular (DArtSeq) analyses designed to test species boundaries. These new lines of evidence form the basis of detailed recommendations for a revised species-level taxonomy of Melichrus including the description of eight new species and one subspecies, recircumscription of previously described species and the correction of a longstanding nomenclatural misapplication. (Photographs by H. T. Kennedy and J. J. Bruhl.)

SB24022The Genomics for Australian Plants (GAP) framework initiative – developing genomic resources for understanding the evolution and conservation of the Australian flora

Lalita Simpson, David J. Cantrill, Margaret Byrne, Theodore R. Allnutt, Graham J. King, Mabel Lum, Ziad Al Bkhetan, Rose L. Andrew, William J. Baker, Matthew D. Barrett 0000-0002-2926-4291, Jacqueline Batley, Oliver Berry, Rachel M. Binks, Jason Bragg, Linda Broadhurst, Gillian Brown, Jeremy J. Bruhl 0000-0001-9112-4436, Richard J. Edwards, Scott Ferguson 0000-0002-4821-7490, Félix Forest, Johan Gustafsson, Timothy A. Hammer 0000-0003-3816-7933, Gareth D. Holmes 0000-0003-1120-8731, Christopher J. Jackson, Elizabeth A. James, Ashley Jones 0000-0002-7368-1666, Paul J. Kersey, Ilia J. Leitch, Olivier Maurin, Todd G. B. McLay, Daniel J. Murphy, Katharina Nargar 0000-0002-0459-5991, Lars Nauheimer 0000-0002-2847-0966, Hervé Sauquet, Alexander N. Schmidt-Lebuhn 0000-0002-7402-8941, Kelly A. Shepherd, Anna E. Syme, Michelle Waycott 0000-0002-0822-0564, Trevor C. Wilson 0000-0002-9026-0521 and Darren M. Crayn 0000-0001-6614-4216

Emblem of Genomics for Australian Plants that develops genomics resources for improving Australian flora knowledge.

The science of genomics is rapidly revolutionising plant biodiversity science, and many institutions and researchers are ill-equipped to keep up with technical developments. To address this we established a national-scale consortium to build genomics capability and datasets for understanding the Australian flora. We outline the architecture and history of this collaboration and describe the major achievements to date, thereby demonstrating the value of a multi-institutional consortium approach. (Image credit: Glenn Harvey.)

This article belongs to the collection: Genomics for Australian plants.

SB24011Navigating phylogenetic conflict and evolutionary inference in plants with target-capture data

E. M. Joyce 0000-0001-8291-8058, A. N. Schmidt-Lebuhn 0000-0002-7402-8941, H. K. Orel 0000-0001-7971-8709, F. J. Nge 0000-0002-0361-8709, B. M. Anderson, T. A. Hammer 0000-0003-3816-7933 and T. G. B. McLay

A review of current bioinformatic approaches for analysing target-capture data in plants, with a particular focus on robust phylogenetic inference in the presence of processes that can cause phylogenetic conflict, such as genome duplication, reticulation, deep coalescence and rapid or simultaneous speciation.

This article belongs to the collection: Genomics for Australian plants.

SB24013Reinstatement of Sabdariffa and new combinations to support a monophyletic concept of Hibiscus (Malvaceae: Hibisceae)

Russell L. Barrett 0000-0003-0360-8321, Vania Nobuko Yoshikawa, Todd G. B. McLay, Marília Cristina Duarte, Geoffrey Mwachala and Margaret M. Hanes

Photographs of the flower and bud of Sabdariffa acetosella (false roselle), a widely cultivated species of Malvaceae.

The beloved plant genus Hibiscus is in for a shake-up, with a new classification changing well-known names. Traditional classifications of hibiscus have not reflected natural groups and new DNA evidence provides a fresh view. We provide new names for many species including the economically important plants kenaf (used for fibre), roselle (used for food, medicine and cosmetics), the state flower of Hawai’i and an Australian native species with potential as a male contraceptive treatment. (Photographs by Russell Barrett.)

SB24029A morphological and phylogenetic analysis of Subulispora Tubaki

Maria Gabriella Andrade Primo de Souza, Diogo Henrique Costa-Rezende, Rafael F. Castañeda-Ruiz and Luís Fernando Pascholati Gusmão 0000-0003-3288-3971

Conidiogenous cells, conidiophores and conidia of anamorphic fungus Subulispora species.

We reclassify the genus Subulispora by confirming placement in the family Phlogicylindriaceae through phylogenetic analysis. We introduce two new species and propose two new combinations, enhancing the understanding of the Subulispora phylogeny. (Image credit: Maria Gabriella Andrade Primo de Souza.)


Images of two species of Prostanthera, P. cineolifera (left) and P. dyarubbin (right).

We present compelling evidence from morphological, DNA and phytochemical data that contributes to resolution of the Prostanthera ovalifolia assemblage, resulting in the clarification of P. cineolifera and description of three new species. Left, P. cineolifera; right, P. dyarubbin. (Image credits: left R. L. Palsson, right J. J. Bruhl.)

Committee on Publication Ethics

Best Student Paper

The Best Student Paper published in 2024 has been awarded to Eilish McMaster.

Plant Systematics and Biogeography in the Australasian Tropics

Special Issues vol. 31 nos 5 & 6, vol. 32 nos 2 & 3 and vol. 32 no. 4 form special editions on Plant Systematics and Biogeography in the Australasian Tropics containing Part 1, Part 2 & Part 3, respectively.

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