Umbilicaria isidiosa
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| Umbilicaria isidiosa | |
|---|---|
Scientific classification  | |
| Kingdom: | Fungi |
| Division: | Ascomycota |
| Class: | Lecanoromycetes |
| Order: | Umbilicariales |
| Family: | Umbilicariaceae |
| Genus: | Umbilicaria |
| Species: | U. isidiosa |
| Binomial name | |
| Umbilicaria isidiosa Krzewicka (2009) | |
 | |
Umbilicaria isidiosa is a species of foliose lichen belonging to the family Umbilicariaceae.[2] It is endemic to Bolivia, where it occurs in high-altitude regions of the Bolivian Andes. It is distinguished by its thallus, which has an upper surface ranging from ashy brown to mouse grey, featuring a frosty (pruinose) texture that varies from smooth to slightly rough. This surface is adorned with numerous isidia (reproductive propagules), ranging from spherical to richly branched, primarily concentrated along the margins. The lower surface is dark, transitioning from smooth to rough in texture, and sparsely covered with dark rhizines (root-like structures).
This species was first described by the Polish lichenologist Beata Krzewicka in 2009. The type specimen of Umbilicaria isidiosa was collected by Adam Flakus northwest of Comarapa city, near the village of Siberia, within the Santa Cruz Department's Manuel María Caballero Province. Found at an elevation of 3,480 m (11,420 ft), the specimen was located on sandstone in an open area. It is placed within the genus Umbilicaria, a group widely recognized for its members that are adapted to extreme environments, including polar and mountainous regions. The species epithet, isidiosa, refers to the presence of isidia, a feature that occurs rarely in Umbilicaria.[1]