Polulichloris, H.Y.Song, Q.Zhang, G.X.Liu & Z.Y.Hu, 2015

Song, Huiyin, Zhang, Qi, Liu, Guoxiang & Hu, Zhengyu, 2015, Polulichloris henanensis gen. et sp. nov. (Trebouxiophyceae, Chlorophyta), a novel subaerial coccoid green alga, Phytotaxa 218 (2), pp. 137-146 : 139

Polulichloris H.Y. Song, Q. Zhang, G.X. Liu & Z.Y. Hu, gen. nov. ( Figs. 1 , 2 )

Vegetative cells solitary, uninucleate, and ellipsoidal. Chloroplast single, parietal, with a pyrenoid surrounded by starch envelope. Cell walls smooth and double-layered. Asexual reproduction via 2‒4‒8 autospores; sexual reproduction not observed. Secondary carotenoids not produced. The genus differs from other members of the Watanabea clade ( Trebouxiophyceae) by the 18S rDNA, ITS and rbc L sequences.

Type species: — Polulichloris henanensis H.Y. Song, Q. Zhang, G.X. Liu & Z.Y. Hu (see below)

Etymology: —The genus name Polulichloris consists of “ Polul ” (the Latin prefix “poluius” means “small volume”) and “chloris” (the Greek suffix “χλωρος” (chloros) means “green”).

Figures

FIGURE 1. Morphology of Polulichloris henanensis strain FACHB-1765.A–G: young vegetative cells. H, I: mature vegetative cell. J‒O: autosporangium. P: vegetative cells and liberation of autospores. Scale bars: A‒D = 2 μm, E–P = 5 μm.

FIGURE 2. Ultrastructure of Polulichloris henanensis. C: chloroplast, P: pyrenoid, SE: starch envelope, S: starch grains. Cell of P. henanensis with a parietal and cup-shaped chloroplast, pyrenoid bisected by a few thylakoid bands, and starch envelope composed of 2–4 plates surrounding the pyrenoid. A. Young cell. B–D. Vegetative cell.