Rhodaphanes Brevistipitata gen. et sp. nov., a New Member of the Stylonematophyceae (Rhodophyta)

Flora of drift plastics: a new red algal genus, Tsunamia transpacifica (Stylonematophyceae) from Japanese tsunami debris in the northeast Pacific Ocean

“…The red algal class Stylonematophyceae has about 15 genera (West et al 2007, Zuccarello et al 2008, Yoon et al 2010, Guiry and Guiry 2016. Morphologically they are simple, varying from unicells and colonies to filamentous prostrate and upright thalli with various plastid types (single multilobed or multiple discoid plastids, with or without a pyrenoid).…”

Bangiopsis subsimplex (Mont.) F. Schmitz (Stylonematales, Rhodophyta) on the northeastern coast of Brazil

“…Bangiopsis F.Schmitz (Rhodophyta, Stylonematophyceae) is one of 13 genera in the order Stylonematales (West et al 2007). Morphologically, species in this genus are characterized by a fl exible, fi lamentous thallus, with the younger portions uniseriate and older portions multiseriate and thicker; ramifi cations, when present, are sparse, subdichotomous to regular, and sometimes have short and uniseriate proliferations on the thallus; the cells are rounded, and have star-shaped chloroplasts with pyrenoids; reproduction occurs by way of monosporangia (Børgesen 1915;Krishnamurthy 1957;West et al 2005).…”

“…West et al (2007) examined partial sequences of smallsubunit RNA and the psbA gene (DNA) and observed that in the resulting consensus tree (maximum-likelihood topology) the genera Bangiopsis and Purpureofi lum grouped together with Rhodaphanes J.A.West, G.C.Zuccarello, J.L.Scott & K.A.West -a genus with a diminutive thallus and which is morphologically similar to Stylonema Reinsch. According to those authors, Rhodaphanes is distinct from Bangiopsis and Purpureofi lum in that its species have cells with one parietal multilobed chloroplast and without a peripheral encircling thylakoid (a feature not seen in any other genus of the class Stylomenatophyceae), as well as cell walls with digeneaside, sorbitol, and trehalose as their principal low molecular weight carbohydrates.…”

Bangiophytes: From one Class to Six; Where Do We Go from Here?

“…1)). Taxa typically contain digeneaside and/or sorbitol as a low molecular weight carbohydrate with the exception of Rufusia, which contains floridoside (Karsten et al, 2003;West et al, 2007b); however, this property has not been determined in all taxa within this class. Currently, there are 15 known genera within this class and six of these have not been sequenced for molecular gene phylogenies.…”