Question

Crustose lichen vs foliose lichen

Answer 1

Crustose Lichen:

1. Crust like growth.
2. Thallus- Flat and Irregularly lobed
3. Fruiting body-small, apothecial type, containing asci and ascospores
4. Examples: Graphis, Rhizocarpon

Foliose Lichen:

1. Thallus - Flat, leaf-like, irregularly lobed
2. Rhizoid like outgrowths called rhizines develop on lower surface of thallus for attachment to the substaratum.
3. Mostly terricolous i.e., found growing on trees.
4. Examples: Physcia, Parmelia