"iris nelsonii", common name "abbeville red" or "super fulva", was the most recently discovered and named louisiana iris. in 1938, w. b. macmillan discovered the plant species; in 1966 randolph named the iris. the common name derives from its native habitat that is located in an exclusive area in southeast abbeville, louisiana. they grow in cypress swamps surrounded by shallow water, or other aquatic habitats with shallow water and full shade. the species is hypothesized to originate as a result of a span of several years of closed-off habitats, and interbreeding of other louisiana iris species ("i. fulva", "i. giganticaerulea", and "i. brevicaulis"), causing the species hybrid to gain stability as its own species. the iris's more recent discovery allows for increasing popularity by birthing many current louisiana iris cultivars. their physiological properties are similar to the "iris fulva", but they grow taller and have larger corollas. however, they stay true to the red iris family with either red or yellow fulvas. the blooms of the iris can be found from the middle to late month of april.