| Hypotrachyna osseoalba | |
|---|---|
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Scientific classification 
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| Domain: | Eukaryota |
| Kingdom: | Fungi |
| Division: | Ascomycota |
| Class: | Lecanoromycetes |
| Order: | Lecanorales |
| Family: | Parmeliaceae |
| Genus: | Hypotrachyna |
| Species: | H. osseoalba
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| Binomial name | |
| Hypotrachyna osseoalba | |
| Synonyms[1] | |
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Hypotrachyna osseoalba, commonly known as the grainy loop lichen, is a species of foliose lichen in the family Parmeliaceae. It is widely distributed in subtropical and temperate areas of the world. Characteristic features of the lichen include the pustules in its cortex, the somewhat linear shape of the lobes comprising the thallus, and the branched rhizines (holdfasts on the thallus underside).