Ulva sp.

Dibner, Research Article Skye, Gabrielson, Paul W. & Freshwater, D. Wilson, 2025, Studies of North Carolina marine algae XV. DNA sequencing reveals some different Ulva species compared to historical reports and U. carsoniae sp. nov. (Ulvales, Chlorophyta), Botanica Marina (Warsaw, Poland) 68 (4), pp. 351-374 : 370

4.7 Ulva sp. NC 7 - Ulva ohnoi

Three North Carolina specimens were identified as U. ohnoi by their rbc L and tufA sequences being exact matches to those of the holotype specimen. Attempts to sequence ITS from these specimens failed. As noted above, U. ohnoi and U. lactuca have been resolved as sister species in single locus, and plastid and mitochondrial genome analyses, but this relationship is only supported in the genome-level analyses ( Hughey et al. 2024).

Ulva ohnoi has been confirmed by DNA sequences to be distributed in the Mediterranean Sea, and Pacific, Indian and Atlantic Oceans. It had previously been reported from the Gulf of Mexico and Atlantic coasts of Florida, USA ( Melton et al. 2016), and its Western Atlantic distribution is herein expanded northward to the North Carolina coast. Morpho-anatomically the North Carolina specimens varied at characters considered significant for identification and keyed to three different species ( U. curvata , U. fasciata , and U. rigida ) using Kapraun (1984).