Plant Guide > Mosses and Lichens > Lichens > Genus Umbilicaria > Umbilicaria Muhlenbergii Lichen

Umbilicaria Muhlenbergii Lichen

Umbilicaria Muhlenbergii, (Ach.) Tuckerm.

Habit and habitat.-On rocks.

Vegetative organs (thallus).-Large, leathery to rigid, irregularly pitted; olive-brown above, darker below.

Fruiting organs (apothecia).-Oblong and appressed, passing into irregular, often star-like plaited clusters without a common margin.

Name.-The specific name was given in honour of a Henry H. Muhlenberg.