Adjective
infrageneric (not comparable)
(taxonomy) Pertaining to division or subclassification within a biological genus of organisms
Although this classification was widely accepted, further infrageneric classification was (and still is) needed to differentiate this widely diverse group. Source: Internet
A modified infrageneric classification of Amaranthus was published by Mosyakin & Robertson (1996) and includes three subgenera: Acnida, Amaranthus, and Albersia. Source: Internet
Sinauer Associates, Inc. Sunderland, MA Infrageneric classification focuses on inflorescence, flower characters and whether a species is monoecious/dioecious, as in the Sauer (1955) suggested classification. Source: Internet
Infrageneric and Sectional Relationships in the Genus Rhododendron (Ericaceae) Inferred from ITS Sequence Data. Source: Internet