| species |
back of apothecia |
lower surface veins |
cephalodia |
notes |
| aphthosa |
continuously corticate |
low, indistinct, darkening towards center abruptly |
appressed |
|
| britannica |
continuously corticate |
low, indistinct, darkening towards center abruptly |
raised |
|
| leucophlebia |
patchy corticate or lacking |
distinct, darkening towards center gradually |
appressed |
|
| chionophila |
continuously corticate |
distinct, darkening towards center gradually |
appressed |
only found in areas with significant snow in the winter; lobes not crisped |
