A leucine‐rich repeat receptor‐like kinase (LRR‐RLK) in maize has many structurally modified paralogues. (a) A c. 200aa fragment of Zm00001d043512 (blue, Chr 3) is found in three other loci, including a small gene fragment (Zm00001d003727), as a fusion to a pentatricopeptide repeat gene (purple, Zm00001d036912), and as a fusion to a potassium channel gene (purple, Zm00001d012717). (b) A more distantly related LRR‐RLK (green, Zm00001d023608) and its tandem duplicate copy Zm00001d023611 are on Chr 10. The RLK domain of the copy has been converted by Zm00001d043512; it also has a truncation caused by a new start codon, with pseudogenization of the remainder of its LRR domain. (c) Gene trees built using different domains show that the two domains of Zm00001d023611 have different paralogues.