Lichen of the British Indian Ocean Territory

Caloplaca is a lichen genus, composed of a number of distinct species. Members of the genus are commonly called firedot lichen,:235 jewel lichen.:235 gold lichens, "orange lichens", but they are not always orange, as in the case of C. albovariegata. The distribution of this lichen genus is worldwide, extending from Antarctica to the high Arctic. It includes a portion of northern North America and the Russian High Arctic. There are about thir less ↑

Coenogonium is a genus of crustose lichens in the monotypic family Coenogoniaceae. It has about 90 species. Most species are leaf-dwelling or grow on bark, although a few are known to grow on rocks under certain conditions, and some are restricted to growth on termite nests. The genus was circumscribed in 1820 by German naturalist Christian Gottfried Ehrenberg.

Coenogonium has a worldwide distribution, with most species known from tropical areas. Most species grow in tropical rain forests in the shaded understorey. They typically inhabit tree trunks, branches, lianas, and leaves. less ↑

Lecanora achroa is a species of crustose lichen in the family Lecanoraceae. It was originally described in 1876 by Finnish botanist William Nylander from specimens collected in Rodrigues, Mauritius. The lichen is found in Australia, New Zealand, Papua New Guinea, and North and South America. less ↑

Lecanora is a genus of lichen commonly called rim lichens.:279 Lichens in the genus Squamarina are also called rime lichens. Members of the genus have roughly circular fruiting discs (apothecia) with rims that have photosynthetic tissue similar to that of the nonfruiting part of the lichen body (thallus). Other lichens with apothecia having margins made of thallus-like tissue are called lecanorine. less ↑