BRIEF REPORT Unusual occurrence of rare Geastrum species with an abnormal stoma development found in Madurai, Tamil Nadu, India [version 1; peer review: 1 approved with reservations] Veluswamy Karthikeyan Department of Botany, Thiagarajar College, Madurai, Tamil Nadu, India Corresponding author: Veluswamy Karthikeyan (karthickeyanv@yahoo.com) Author roles: Karthikeyan V: Conceptualization Competing interests: No competing interests were disclosed. Grant information: The author(s) declared that no grants were involved in supporting this work. Copyright: © 2020 Karthikeyan V. This is an open access article distributed under the terms of the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited. Data associated with the article are available under the terms of the Creative Commons Zero "No rights reserved" data waiver (CC0 1.0 Public domain dedication). How to cite this article: Karthikeyan V. Unusual occurrence of rare Geastrum species with an abnormal stoma development found in Madurai, Tamil Nadu, India [version 1; peer review: 1 approved with reservations] F1000Research 2020, 9:1301 https://doi.org/10.12688/f1000research.25626.1 First published: 05 Nov 2020, 9:1301 https://doi.org/10.12688/f1000research.25626.1 First published: 05 Nov 2020, 9:1301 https://doi.org/10.12688/f1000research.25626.1 Latest published: 05 Nov 2020, 9:1301 https://doi.org/10.12688/f1000research.25626.1 v1 Abstract Unusual occurrence of Geastrum species fungi, belonging to the class Basidiomycetes, found in riverbank regions of Madurai, Tamil Nadu, India. Its detailed illustrations and morphological characterization analysis are reported in this study. Keywords Basidiomycets, Geastrum and Characterization Open Peer Review Reviewer Status Invited Reviewers 1 version 1 05 Nov 2020 report Julieth Sousa , Universidade Federal do Rio Grande do Norte, Rio Grande do Norte, Brazil 1. Any reports and responses or comments on the article can be found at the end of the article. Page 1 of 6 F1000Research 2020, 9:1301 Last updated: 19 JUL 2021