| The parenchymatous thalli are generally covered with a mucilage layer, rather than cuticle. |
| Lichenometry is a technique used to determine the age of exposed rock surfaces based on the size of lichen thalli. |
| These structures cannot then be produced from the product of a single spore nor even from the thalli derived from any two spores. |
| These applanate thalli are dimerous and in many examples only have the prostrate filaments and one epithallial cell in the perpendicular system. |
| The plurispores and unispores produced by the erect thalli at 10 degrees C under SD conditions once again developed into new prostrate thalli. |
| Finely dry ground thalli of the investigated lichens were extracted using acetone in a Soxhlet extractor. |
