Rhexinema planctonica (Whitford) Darienko et Pröschold 2017

Darienko, Tatyana & Pröschold, Thomas, 2017, Toward a monograph of non-marine Ulvophyceae using an integrative approach (Molecular phylogeny and systematics of terrestrial Ulvophyceae II.), Phytotaxa 324 (1), pp. 1-41 : 29

Rhexinema planctonica (Whitford) Darienko et Pröschold comb. nov. ( Fig. 16E , 18A–H )

Basionym: Heterodictyon planctonicum Whitford 1956 , Trans. Am. Micro. Soc. 75: 201 (diagnosis latina), figs. 12–15 (nom. invalid), Heterodictyon planctonicum Whitford 1960 , Trans. Am. Micro. Soc. 79: 228 (emended diagnosis), fig. 8–10 (nom. invalid).

Synonym: Helicodictyon planctonicum (Whitford) Whitford et Schumacher 1966 , Phycologia 5: 274.

Lectotype (designated herein): Fig. 13 in Whitford (1956).

Epitype (designated herein): The strain UTEX 1570 is permanently cryopreserved in a metabolically inactive state (cryopreserved in liquid nitrogen) in the UTEX, University of Texas, USA.

ITS-2 DNA Barcode: RHE 3 in Figs S2.

Comment: Biebel (1968) isolated the strain UTEX 1570, which we have investigated in this study.The morphology of this strain is consistent with the original description by Whitford (1956, 1960) and Whitford & Schumacher (1966).

Figures

FIGURE 13. Overview about the morphology of the investigated Ctenocladus strains grown on 3NBBM medium. A,B. ULVO-16, C. ULVO-18, D,E. ULVO-24, F. SAG 467-1.

FIGURE 16. Overview about the morphology of the investigated Rhexinema strains grown on MiEB12 medium. A. R. paucicellularis SAG 463-1, B. SAG 29.93, C. SAG 8.90, D. SAG 466-2; E. R. planctonica UTEX 1570, F,G. R. sancta-tomea ACOI 592.

FIGURE 18. Morphology of Rhexinema planctonica UTEX 1570 grown on MiEB12 medium.