Pollen morphology of Pseudanthus (Picrodendraceae)

Autor(en)

Angelika Till, Silvia Ulrich, David J. Cantrill, Fridgeir Grimsson

Abstrakt

This is the first comprehensive investigation on the pollen morphology of Pseudanthus, a small genus within the Picrodendraceae, comprising nine species all endemic to Australia. This study presents the pollen morphology of eight out of the nine currently accepted Pseudanthus species using light and scanning electron microscopy. Pollen from five of the species (incl. subspecies) are described here for the first time. Pollen from different Pseudanthus species appears alike, sharing many overlapping features, including sculpture patterns observed with both LM and SEM. However, detailed examination reveals species-specific differences such as size and aperture number, that aid in discriminating pollen of the individual species. In general, Picrodendraceae pollen is mostly isodiametric to oblate, spherical to spheroidal in shape, and either exhibits a pantoporate or stephanoporate aperture configuration, as well as echinate sculpture. Although, Pseudanthus pollen shares these morphological features, being isodiametric to slightly oblate, pantoporate, and echinate, the pollen of this genus can be differentiated from other closely related Picrodendraceae (Kairothamnus, Micrantheum, Neoroepera, Scagea, and Stachystemon) based on set of traits observed with combined LM and SEM.

Organisation(en)

Department für Botanik und Biodiversitätsforschung

Externe Organisation(en)

Royal Botanic Gardens Victoria

Journal

Review of Palaeobotany and Palynology

Band

344

Anzahl der Seiten

11

ISSN

0034-6667

DOI

https://doi.org/10.1016/j.revpalbo.2025.105426

Publikationsdatum

2026

Peer-reviewed

Ja

ÖFOS 2012

106008 Botanik, 106049 Ultrastrukturforschung, 105117 Paläobotanik

Schlagwörter

Link zum Portal

https://ucrisportal.univie.ac.at/de/publications/3c724161-55a8-4c3b-95eb-e7d9b47f89f8