Fungus

Formal name: "fungi".

Does not appear to refer to any one specific phylogenetic level, it usually refers to either:

Size: 10 micrometers.

Genome:

Proteins per cell: 42m: www.cell.com/pb-assets/journals/research/cell-systems/cels_384.pdf

Division time: 100 minutes.

Minimization project: en.wikipedia.org/wiki/Saccharomyces_cerevisiae#Synthetic_yeast_genome_project | syntheticyeast.org/