Rigidella Lindl. is a cormous genus in the Iridaceae family native to the mountainous area of southern Mexico and Guatemala. This genus was described in 1840 and revised in 1971. All four species have bright red flowers and secrete sugary nectar and are pollinated by hummingbirds. In their 2008 book, The Iris Family: Natural History and Classification, Peter Goldblatt and John Manning are now including this genus in Tigridia Juss. This is based on conclusive genetic research. In 2025 this change has been accepted. These four species differ from other species in Tigridia only in having minute outer segments. Goldblatt and Manning viewed this as merely an adaptation for hummingbird pollination. These plants are summer growing and dormant in winter. Seeds are said to germinate readily when sown in spring (Peter Maynard).
Rigidella flammea Lindl. see Tigridia flammea (Lindl.) Ravenna
Rigidella immaculata Herb. see Tigridia immaculata (Herb.) Ravenna
Rigidella inusitata Cruden see Tigridia inusitata (Cruden) Ravenna
Rigidella orthantha Lem. see Tigridia orthantha (Lem.) Ravenna