Mitochondria vs mitochondria

I’m removing lineages as per the SOP

remove.lineage(fasta=current, count=current, taxonomy=current, taxon=Chloroplast-Mitochondria-unknown-Archaea-Eukaryota)

But a new set of samples (some sort of plant material) are coming back nearly all Bacteria(100);Proteobacteria(100);Alphaproteobacteria(100);Rickettsiales(100);mitochondria(100);mitochondria_unclassified(100);

Should I be removing both big and little M mitochondria?

Use the lowercase in this situation.
Pat