U
- Tillandsia ulrici Ehlers
- Tillandsia ultima L.B.Sm.
- Tillandsia umbellata André
- Tillandsia usneoides (L.) L.
- Tillandsia utriculata L.
- var. utriculata
- forma variegata H.Luther
- ssp. pringlei (S. Watson) Gardner
- var. utriculata
Read more about this topic: List Of Tillandsia Species