Sirindhornea siamensis, A New Sequestrate Boletoid Genus of Boletaceae from Thailand

Authors

  • Piyangkun Lueangjaroenkit Department of Microbiology, Faculty of Science, Kasetsart University, Bangkok 10900, THAILAND: Biodiversity Center Kasetsart University (BDCKU), Bangkok 10900, THAILAND
  • Nootcharee Doungsin Forest Entomology and Microbiology Group, Forest and Plant Conservation Research Office, Department of National Parks, Wildlife and Plant Conservation, Bangkok, 10900, THAILAND
  • Panrada Jangsantear Forest Entomology and Microbiology Group, Forest and Plant Conservation Research Office, Department of National Parks, Wildlife and Plant Conservation, Bangkok, 10900, THAILAND
  • Tanyaporn Boonwanno Wildlife Conservation Division, Protected Area Regional Office 9, Department of National Parks, Wildlife and Plant Conservation, Ubon Ratchathani 34000, THAILAND
  • Phanin Sintawarak Forest Entomology and Microbiology Group, Forest and Plant Conservation Research Office, Department of National Parks, Wildlife and Plant Conservation, Bangkok, 10900, THAILAND
  • Ananya Sahathippayakul Department of Microbiology, Faculty of Science, Kasetsart University, Bangkok 10900, THAILAND
  • Vassana Supapongsri Department of Microbiology, Faculty of Science, Kasetsart University, Bangkok 10900, THAILAND
  • Baramee Sakolrak Forest Entomology and Microbiology Group, Forest and Plant Conservation Research Office, Department of National Parks, Wildlife and Plant Conservation, Bangkok, 10900, THAILAND
  • Winanda Himaman Forest Entomology and Microbiology Group, Forest and Plant Conservation Research Office, Department of National Parks, Wildlife and Plant Conservation, Bangkok, 10900, THAILAND
  • Pornsawan Sutthinon Biodiversity Center Kasetsart University (BDCKU), Bangkok 10900, THAILAND: Department of Botany, Faculty of Science, Kasetsart University, Bangkok 10900, THAILAND

DOI:

https://doi.org/10.58837/tnh.25.8.267496

Keywords:

fungal taxonomy, new genus, Leccinoideae, sequestrate boletes

Abstract

This study investigates sequestrate boletes from southern Thailand and presents a morphologically distinctive specimen with a strong cantaloupe-like odor. Detailed morphological and molecular phylogenetic analyses, utilizing the internal transcribed spacer (ITS), large subunit ribosomal RNA (LSU) and RNA polymerase II second largest subunit (RPB2) genes were performed to determine its taxonomic position. Nonetheless, the new sequestrate bolete exhibited a distinctive morphological features, including a scaly peridium, a characteristic cantaloupe-like odor at maturity. Together with molecular evidence, these characteristics clearly distinguish it from other sequestrate boletoid (Chamonixia, Durianella, Octaviania, Rossbeevera, and Turmalinea). These findings support the recognition of a novel genus within the subfamily Leccinoideae. Therefore, we propose a new genus and new species, Sirindhornea siamensis, for this sequestrate bolete species.

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Published

2025-11-17

How to Cite

[1]
Lueangjaroenkit, P., Doungsin, N., Jangsantear, P., Boonwanno, T., Sintawarak, P. , Sahathippayakul, A. , Supapongsri, V. , Sakolrak, B. , Himaman, W. and Sutthinon, P. 2025. Sirindhornea siamensis, A New Sequestrate Boletoid Genus of Boletaceae from Thailand. Tropical Natural History. 25, 8 (Nov. 2025), 481–492. DOI:https://doi.org/10.58837/tnh.25.8.267496.

Issue

No. 8 (2025): Supplement

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Original Articles

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Chulalongkorn University. All rights reserved. No part of this publication may be reproduced, translated, stored in a retrieval system, or transmitted in any form or by any means, electronic, mechanical, photocopying, recording or otherwise, without prior written permission of the publisher

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