Specimens of Orontium aquaticum supposedly collected in Iowa are almost certainly a labeling error. Populations occur primarily on the Atlantic and Gulf coastal plains and less frequently in the Appalachian region.
Orontium aquaticum and Peltandra virginica may have been used somewhat interchangeably by Native Americans and may be confused at times in the literature. Seeds of O. aquaticum were either dried or boiled repeatedly in water before being eaten by Native Americans; Swedish settlers also used the seeds in a similar manner (P. Kalm 1770--1771). Fresh seeds microwaved for 5 minutes in tap water have a "firm texture and pleasant, nutty flavor" and produce no irritation (L. H. Klotz 1992). Orontium aquaticum is sometimes grown for its attractive foliage and bright yellow spadices in aquatic gardens. It is available through catalog sources.
Orontium aquaticum /ɒˈrɒntiəm/, sometimes called golden-club,[2] floating arum, never-wets or tawkin,[3] is a species of flowering plants in the family Araceae. It is the single living species in the genus Orontium, which also contains several extinct species described from fossils.[4] O. aquaticum is endemic to the eastern United States[2] and is found growing in ponds, streams, and shallow lakes. It prefers an acidic environment. The leaves are pointed and oval with a water repellent surface. The inflorescence is most notable for having an extremely small almost indistinguishable sheath surrounding the spadix. Very early in the flowering this green sheath withers away leaving only the spadix.
The sheath was originally classified by Adolf Engler as a spathe due it being the last foliar piece before the spadix.[5] He also noted that species lacked a sympodial leaf. However, in a 1988 paper Thomas Ray argued that the structure was misidentified by Engler and was actually a sympodial leaf. According to Ray the spathe was missing and not the sympodial leaf. This interpretation was determined based on observations of morphological charactestics namely the appearance of a two-keeled bracteole and its positioning.[6] Despite this, the floral structure is still commonly identified in the literature as being a spathe.[7][8][9]
Orontium aquaticum /ɒˈrɒntiəm/, sometimes called golden-club, floating arum, never-wets or tawkin, is a species of flowering plants in the family Araceae. It is the single living species in the genus Orontium, which also contains several extinct species described from fossils. O. aquaticum is endemic to the eastern United States and is found growing in ponds, streams, and shallow lakes. It prefers an acidic environment. The leaves are pointed and oval with a water repellent surface. The inflorescence is most notable for having an extremely small almost indistinguishable sheath surrounding the spadix. Very early in the flowering this green sheath withers away leaving only the spadix.
The sheath was originally classified by Adolf Engler as a spathe due it being the last foliar piece before the spadix. He also noted that species lacked a sympodial leaf. However, in a 1988 paper Thomas Ray argued that the structure was misidentified by Engler and was actually a sympodial leaf. According to Ray the spathe was missing and not the sympodial leaf. This interpretation was determined based on observations of morphological charactestics namely the appearance of a two-keeled bracteole and its positioning. Despite this, the floral structure is still commonly identified in the literature as being a spathe.
