Dublin Core The Dublin Core metadata element set is common to all Omeka records, including items, files, and collections. For more information see, http://dublincore.org/documents/dces/. Title A name given to the resource Articles Article Faculty Publications -Articles Dublin Core The Dublin Core metadata element set is common to all Omeka records, including items, files, and collections. For more information see, http://dublincore.org/documents/dces/. Title A name given to the resource Roxburgh was right: Aponogeton microphyllus and Aponogeton undulatus are distinct species Subject The topic of the resource Aquarium plant; cpDNA; cytogenetics; hybridization; ITS; phylogeny; polysomaty Description An account of the resource Aponogeton microphyllus, previously placed under the synonymy of A. undulatus, is recognized here as a distinct species based on morphology, chromosome number, and molecular phylogenetics (nuclear ribosomal internal transcribed (ITS) spacer region). Observations on the type and live specimens revealed morphological differences between the two species. Aponogeton microphyllus flowered regularly and set seeds. Aponogeton undulatus flowered rarely, did not set seeds, but showed formation of young plantlets on the inflorescence axis. Similarly, different chromosome numbers were recorded in Aponogeton microphyllus and the two forms of A. undulatus, viz., AF1 and AF2, whichoccurin distinct populations. Aponogeton microphyllus exhibited polysomaty with root-tip cells showing 2n=40, 42, and 44 chromosomes. The two forms of A. undulatus, AF1 and AF2, showed 2n=84 and 86 chromosomes, respectively. Based on the ITS data, both speciesoccupiedtwo separate clades. Plastid trnK intron region indicated a close relationship between both species. Our study suggests the need for comprehensive phylogenetic analyses of A. undulatus across its distribution range based on more advanced techniques such as high-throughput sequencing data to understand the A. undulatus species complex and to detect natural hybrids of this species. 2023, Indian Academy of Sciences. Creator An entity primarily responsible for making the resource Chougule R.N.; Surveswaran S.; George A.; Yadav S.R.; Lekhak M.M. Source A related resource from which the described resource is derived Journal of Biosciences, Vol-48, No. 4 Publisher An entity responsible for making the resource available Springer Date A point or period of time associated with an event in the lifecycle of the resource 2023-01-01 Identifier An unambiguous reference to the resource within a given context <a href="https://doi.org/10.1007/s12038-023-00366-y" target="_blank" rel="noreferrer noopener">https://doi.org/10.1007/s12038-023-00366-y</a> <br /><br /><a href="https://www.scopus.com/inward/record.uri?eid=2-s2.0-85178920667&amp;doi=10.1007%2Fs12038-023-00366-y&amp;partnerID=40&amp;md5=de18533f0a7cad6d9227c311af027c72" target="_blank" rel="noreferrer noopener">https://www.scopus.com/inward/record.uri?eid=2-s2.0-85178920667&amp;doi=10.1007%2fs12038-023-00366-y&amp;partnerID=40&amp;md5=de18533f0a7cad6d9227c311af027c72</a> Rights Information about rights held in and over the resource Restricted Access Relation A related resource ISSN: 2505991; PubMed ID: 38088375; CODEN: JOBSD Format The file format, physical medium, or dimensions of the resource Online Language A language of the resource English Type The nature or genre of the resource Article Coverage The spatial or temporal topic of the resource, the spatial applicability of the resource, or the jurisdiction under which the resource is relevant Chougule R.N., Angiosperm Taxonomy Laboratory, Department of Botany, Shivaji University, Kolhapur, 416004, India; Surveswaran S., Department of Plant Sciences, School of Life Sciences, University of Hyderabad, Gachibowli, Hyderabad, 500046, India; George A., Department of Life Sciences, CHRIST (Deemed to be University), Bengaluru, 560029, India; Yadav S.R., Angiosperm Taxonomy Laboratory, Department of Botany, Shivaji University, Kolhapur, 416004, India; Lekhak M.M., Angiosperm Taxonomy Laboratory, Department of Botany, Shivaji University, Kolhapur, 416004, India