Phaeophila dendroides Batters 1902

• Main Authors: Santos, Alana Araujo Dos, Moura, Carlos Wallace Do Nascimento
• Format: Other/Unknown Material
• Language: unknown
• Published: Zenodo 2011
• Subjects: Biodiversity; Taxonomy; Plantae; Chlorophyta; Ulvophyceae; Ulvales; Phaeophilaceae; Phaeophila; Phaeophila dendroides; Newfoundland
• Online Access: https://doi.org/10.5281/zenodo.4923886; http://treatment.plazi.org/id/03CB87D7743B3A4AEB8FFC446CE2061E

Phaeophila dendroides (Figs 2 A–H) Oclochaete dendroides Crouan & Crouan (1852: 128). Thalli growing in tufts, light to dark green, composed of uniseriate filaments, densely aggregated, intertwined, with sparse unilateral ramifications. Filaments with cylindrical to irregular cells, longer than wide, (30.0–)41.5(–55.0) µ m long and (8.5–)15.0(–18.5) µ m in diameter, sometimes with slight intumescense. Cells with dense contents, chloroplast parietal, sometimes with lobate margins, 9–14 pyrenoids. Hairs erect, colorless, straight, sinuous, sometimes with dilated base, (100.0–)172.5(–280.0) µm long. When cultivated, tufts growing free or aggregated on the flask, filaments uniseriate with cylindrical cells, elongated, surrounded by spherical cells, (12.5–)17.0(–20.0) µm in diameter. Ellipsoid reproductive structures were observed in cultivated specimens, 10 µm long and 2.5 µm in diameter, with an eye spot and two flagella (gametes or spores), although it was not possible to identify the cell type that gave rise to them. Representative specimens examined:— BRAZIL. Bahia: Ilha de Itaparica, Vera Cruz, Praia da Penha, 19/ V/2007, Santos (HUEFS 130886); 25/XI/2007, Santos & Alves (HUEFS 130889); 08/III/2008, Santos (HUEFS 147559). Praia da Barra Grande, 18/V/2007, Santos (HUEFS 147561); 14/VII/2007, Santos (HUEFS 147562); 27/IX/2007, Oliveira & Oliveira (HUEFS 130890); 25/XI/2007, Alves & Ramos (HUEFS 147563). Geographic distribution along the west coast of Atlantic Ocean:—Newfoundland to North Carolina, Florida, Gulf of Mexico, Bermuda, Venezuela, Brazil (Oliveira & Ugadim 1976, Ganesan 1989, Schneider & Searles 1991, Reis & Yoneshigue-Valentin 1996, Dawes & Mathieson 2008). Comments:—According to O’Kelly & Yarish (1980), Phaeophila dendroides is characterized in terms of the structure and development of its zoosporangia and by the architecture of the flagella apparatus of the zoospore. These characteristics led Chappel et al. (1990) to consider P. dendroides as having a ...