Lobothallia is a genus of lichens in the Megasporaceae family with foliose thalli that become crustose areolate in the center with age, and grow on calcareous to siliceous rocks.:306–7 The crustose part of the body may keep its lower cortex,:306 though not always. Dark brown to black apothecia may be sunken into the surface of the thallus, as indicated in the common name puffed sunken disk lichen.:306 Members grow in 3–5 cm or more radiating lobes (placoidioid)....
Habit of lichen | on rock |
---|---|
Form | lichen |