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This article, published in Mediterranean Botany, discusses the discovery of a new species of Allium, a genus of flowering plants, in Bulgaria and Greece. The researchers collected population samples of an unknown species that appeared to be representative of the newly described species, Allium goumenissanum. Through various methods, including genetic, cytogenetic, and morphological analyses, the researchers confirmed that the unknown species was indeed A. goumenissanum. The study also expanded the known distribution of A. goumenissanum, including new localities in Greece and identifying it as a new taxon for Bulgaria. This document provides detailed information on the methods and procedures used in a study on Allium species. The study involved genetic analysis, chromosome counts, flow cytometry, and morphological and anatomical observations. The researchers used various techniques and software to analyze DNA sequences, determine ploidy levels, and examine the characteristics of different plant parts. The results of these analyses were compared to existing descriptions of related species. The document includes tables and figures that present the data and findings of the study. The text provides information on the morphology, genetics, and cytogenetics of Allium sp., specifically focusing on the identification and classification of the species. The study used molecular and cytogenetic analyses to determine that the populations of Allium sp. belong to A. goumenissanum. The study also compared the morphology, epidermal micromorphology, and leaf anatomy of the cultivated accessions [Extracted from the article]