Yoneshiguea Barros-Barreto, Maggs & M.A.Jaramillo, 2023

Barros-Barreto, Maria Beatriz, Jaramillo, Maria Alejandra, Hommersand, Max H., Ferreira, Paulo C. G. & Maggs, Christine A., 2023, Phylogenetic analysis of the red algal tribe Ceramieae reveals multiple morphological homoplasies but defines new genera, Cryptogamie, Algologie 44 (2), pp. 13-58 : 29

Genus Yoneshiguea Barros-Barreto, Maggs & M.A.Jaramillo , gen. nov.

Thalli terete with straight apices. Node formed by 4-6 periaxial cells cutting off two acropetal cells. Tetrasporangia formed by periaxial cells, 1-3 per node, naked or partially covered by cortical cells; tetrasporangia unilateral to bilateral ( Fig. 1E, K, O ).

TYPE SPECIES. — Yoneshiguea affinis (Setchell & Gardner) Barros-Barreto, Maggs & M.A.Jaramillo , comb. nov.

ETYMOLOGY. — The name was selected to honour a pioneering female Brazilian phycologist, Yocie Yoneshigue-Valentin.

Figures

FIG. 1. — Diagnostic morphological features of the tribe Ceramieae:A, Ceramium pallidum (Kützing) Maggs & Hommersand;B, carposporophyte,Pseudoceramium oliveirarum Barros-Barreto,Maggs & M.A.Jaramillo, gen. nov., sp. nov.; C, tetrasporophyte,Centroceras gasparrinii (Meneghini) Kützing; D, male plant showing spermatangia, Corallophila atlantica (A.B.Joly & Ugadim) R.E.Norris;E, acropetal cells,Yoneshiguea compta (Børgesen) Barros-Barreto,Maggs & M.A.Jaramillo, comb. nov.; F, three cortical initial cells, Gayliella dawsonii (A.B.Joly) Barros-Barreto & F.P.Gomes; G, three cortical initial cells and two descending filaments, Centroceras gasparrinii; H, four cortical initial cells, Stirkia fujiana (Barros-Barreto & Maggs) Barros-Barreto & Maggs, comb. nov.; I, four cortical initial cells and descending filaments,Corallophila atlantica; J, five cortical initials including three descending filaments,Ceramium secundatum Lyngbye; K, Yoneshiguea affinis (Setchell & Gardner) Barros-Barreto, Maggs & M.A.Jaramillo, comb. nov. without descending filaments; L, one descending filament per periaxial cell, Gayliella dawsonii (A.B.Joly) Barros-Barreto & F.P.Gomes; M, two descending filaments, Stirkia fujiana (Barros-Barreto & Maggs) Barros-Barreto & Maggs, comb. nov.; N, five cortical initial cells, the fifth one over the periaxial cell, Stirkia codicola (J.Agardh) Barros-Barreto & Maggs, comb. nov.; O, transverse section showing four periaxial cells,Yoneshiguea compta (Børgesen) Barros-Barreto, Maggs & M.A.Jaramillo, comb.nov.; P, transverse section showing six periaxial cells,Stirkia brasiliensis (A.B.Joly) Barros-Barreto & Maggs, comb. nov.; Q, transverse section showing nine periaxial cells, Ceramieae sp. 5; R, transverse section showing 14 periaxial cells, Centroceras gasparrinii. Abbreviations: a1, first acropetal cell; a2, second acropetal cell; b1, first basipetal cell; b2, second basipetal cell; b3, third basipetal cell; p, periaxial cell. Scale bars: B, 500 μm; C, D, 200 μm; K, L, M, O-R, 100 μm.