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 : 365

3.8 Ulva sp. NC 8 - Ulva lacinulata

Ulva lacinulata was also in the same species clade as U. lactuca and U. ohnoi in rbc L and tufA trees. Relationships among the species within this clade were unsupported, but U. lacinulata as well as U. conglobata were consistently resolved as basal lineages.

Two specimens of U. lacinulata were collected, one from the mid-coast and one from the southern coast ( Figure 5 ). Both were> 20 cm long, unbranched blades and only differed in character states for blade width and shape, pyrenoid count, cell diameter, and shape ( Table 3, Figure 7H and I ).

Figures

Figure 5: Distribution of eight North Carolina Ulva species among the 52 collection sites in this study.

Figure 7: Variation in morphology of North Carolina Ulva specimens. (A–B) U. tepida: (A) NCweed-2042 sample voucher (WNC-22798), (B) NCweed-2112 sample voucher (WNC-34239). (C–E) U. lactuca: (C) NCweed-2233 sample voucher (WNC-34415), (D) NCweed-2111 sample voucher (WNC-34238), (E) NCweed-2150 sample voucher (WNC-34362). (F–G) U. ohnoi: (F) NCweed-2064 sample voucher (WNC-34196), (G) NCweed-2186 sample voucher (WNC-34316). (H–I) U. lacinulata: (H) NCweed-2200 sample voucher (WNC-34414). (I) NCweed-2111 sample voucher (WNC-34413).