Muilla is a genus of monocots in the family Asparagaceae.

The genus name is a taxonomic anagram of Allium (in fact, the letters are in exact reverse order), the onion genus, for the flowers' resemblance.

[1] In the APG III classification system, it is placed in the family Asparagaceae, subfamily Brodiaeoideae.

[2][3] The subfamily has also been treated as a separate family Themidaceae.

[4][5][6][7] Muilla species are native to southwestern North America.