FIGURE 2 in Phyllosiphon ari sp. nov. (Watanabea clade, Trebouxiophyceae), a new parasitic species isolated from leaves of Arum italicum (Araceae)

FIGURE 2. Ultrastructure of Phyllosiphon ari sp. nov. A. Cross section of parasitic filaments with thick cell wall containing endospores. B. Detail of an endospore with parietal chloroplast and large extraplastidial oil droplet. C. Autosporangium with autospores inside. Note the autospore released by rupture of autosporangial cell wall, strain CAUP H8803. D. Detail of chlorelloid cell with mitochondria, plastid containing plastoglobuli and starch grains, and extraplastidial oil droplet, strain CAUP H8803. Abbreviations: c, chloroplast; cw, cell wall; m, mitochondria; n, nucleus; o, oil droplet; s, starch grain. Scale bars: 0.5 μm (A–B, D), 2 μm (C).