Uvulifera Molinari.

Veselá, Veronika, Malavasi, Veronica & Škaloud, Pavel, 2024, A synopsis of green-algal lichen symbionts with an emphasis on their free-living lifestyle, Phycologia 63 (3), pp. 317-338 : 327

Uvulifera Molinari.

The genus Uvulifera ( Fig. 17 ), originally described as Coccobotrys by Chodat (1913), possesses a morphology very similar to that of Apatococcus . The thallus consists of globular to slightly elongated cells, often forming sarcinoid three-dimensional colonies, and, occasionally short, branched, easily disintegrable filaments. The chloroplast is simple, parietal without a pyrenoid. Reproduction occurs by zoospores or aplanospores ( Vischer 1960). The two currently accepted species ( U. mucosa , U. verrucariae ; Guiry & Guiry 2022) are closely related to Xerochlorella ( Mikhailyuk et al. 2020) . The type species U. verrucariae was identified as a photobiont of Verrucaria nigrescens based on light microscopy observations ( Chodat 1913). Free-living and lichenized cells were observed in limestone cavities ( Roldán et al. 2004). Moreover, it occurs free-living on buildings ( Barberousse et al. 2006) and in soil ( Flechtner et al. 2008; Stewart et al. 2021).

Figures

Figs 1–18. Lichen photobiont genera (including nonlichenized species) belonging to classes Trebouxiophyceae and Chlorophyceae. Fig. 1. Asterochloris lobophora. Fig. 10. Prasiola crispa. Fig. 2. Myrmecia incisa. Fig. 11. Pseudochlorella pringsheimii. Fig. 3. Trebouxia impressa. Fig. 12. Stichococcus sp. Fig. 4. Vulcanochloris symbiontica. Fig. 13. Auxenochlorella protothecoides. Fig. 5. Chloroidium saccharophilum. Fig. 14. Apatococcus sp. Fig. 6. Jaagichlorella luteoviridis. Fig. 15. Leptosira sp. Fig. 7. Coccomyxa sp. Fig. 16. Symbiochloris tschermakiae. Fig. 8. Elliptochloris subsphaerica. Fig. 17. Uvulifera verrucariae (Lorenz 2016). Fig. 9. Diplosphaera chodatii. Fig. 18. Bracteacoccus. sp. Scale bars: 10 μm (Figs 1-9, 11-18), 200 μm (Fig. 10).