delicatissima
Delicatissima is the feminine form of the Latin superlative adjective delicatissimus, meaning "most delicate" or "most refined." In biological nomenclature, delicatissima is used as an epithet in the scientific names of organisms to convey a perceived delicacy or fine appearance, rather than to designate a single taxon.
As a species epithet, delicatissima must agree in gender with the genus name; masculine forms use delicatissimus,
Because it is an epithet, there is no single "Delicatissima" taxon; multiple species across different genera
In practice, the form of the epithet will vary to match the gender of the genus name.