https://nanobioletters.com/ 1 of 19 Review Volume 13, Issue 1, 2024, 32 https://doi.org/10.33263/LIANBS131.032 Research Evolution on Medicinal Plant from Myrtaceae Family (Callistemon genus): Five Decades of Research (a Bibliometric Review) Larayetan Rotimi Abisoye 1,2,* , Chijioke Olisah 3 , Ayeni Gideon 4,5 , Wilson Ocheme 1 , Sunday Omale 1 , Alex Ilenikhena 6 , Balogun Sadiya Ufelli 7 , Abayomi Ajayi 8 1 Department of Chemistry, Kogi State University, Kogi State, PMB 1008, Anyigba, Nigeria; timlarayetan@gmail.com (L.R.A.), Wilson@gmail.com (W.O.), Sunday@yahoo.com (S.O.); 2 Department of Pure and Applied Chemistry University of Fort Hare, Alice 5700, South Africa; timlarayetan@gmail.com (L.R.A.); 3 Botany Department, Institute for Costal and Marine Research, Nelson Mandela University, Port Elizabeth 6031, South Africa; olisah.chijioke@gmail.com (C.O.); 4 Department of Biochemistry, Kogi State University, Kogi State, PMB 1008, Anyigba, Nigeria; gideon4.ayeni@gmail.com (A.G.); 5 Department of Biochemistry, School of Life Sciences, University of KwaZulu-Natal, Westville Campus, Durban, South Africa; gideon4.ayeni@gmail.com (A.G.); 6 Jacio Environmental Limited, Refinery Road, Delta State, Nigeria; alexakhina2013@yandex.ru (A.O.); 7 Department of Human Anatomy, College of Health Sciences, Federal University Dutse, Jigawa State, Nigeria; sadiya.u.balogun@gmail.com (B.S.U.); 8 Department of Anatomy, Faculty of Basic Medical Sciences, College of Health Sciences, Kogi State University, Kogi State, PMB 1008, Anyigba, Nigeria; abajayi2003@yahoo.com (A.A.); * Correspondence: timlarayetan@gmail.com (L.R.A.); Scopus Author ID 57194439696 Received: 25.02.2023; Accepted: 25.03.2023; Published: 13.08.2023 Abstract: This study carried out a bibliometric analysis centered on Callistemon research, spanning five decades, disclosing their trend and limitations. Published works related to Callistemon between 1966 and 2020 were retrieved from Web of Science (WoS) and SCOPUS databases using the search term Callistemon. A total of 239 documents comprising 237 research and two review articles were obtained from the hybrid databases. The 239 articles were authored by 680 researchers across the globe with an article/author and author/article ratio of 0.351 and 2.85, respectively. An average citation number of 9.657 was recorded per document; the most recurrent keywords obtained in this analysis were Myrtaceae, Callistemon citrinus, Callistemon lanceolatus, 1, 8-cineole, essential oil, essential oil composition, antibacterial, and antioxidants. This analysis offered a comprehensive and general overview of the Callistemon genus from 1966 to 2020 with an insight into the frequency of citations for most cited publications in addition to the trend of articles, journals, countries, top researchers, and the quality of works steering from research on Callistemon genus. This bibliometric study will help researchers in this field of interest understand Callistemon's growth trajectory, identify the scientific areas of evidence, and find exceptional analysis centers for scientific interchange and collaboration. Keywords: Callistemon genus; bibliometric analysis; review; web of science; SCOPUS; Myrtaceae; Callistemon citrinus; Callistemon lanceolatus) © 2023 by the authors. This article is an open-access article distributed under the terms and conditions of the Creative Commons Attribution (CC BY) license (https://creativecommons.org/licenses/by/4.0/). 1. Introduction Plants are indispensable because they play a vital role in the continued existence of life on planet Earth due to their activities in supplying oxygen to different organisms and humans.