phenon
/ˈfiːnɒn/ /ˈfɛnɒn/Biology
noun
A group of organisms which is recognized simply on the basis of similarity of characteristics, regardless of any biological interaction or genetic relatedness; (in later use) specifically a grouping of organisms established by phenetics or numerical taxonomy.
Origin
1940s. From ancient Greek ϕαίνειν to cause to appear + -on, after phenotype. Compare.