Lasallia pensylvanica (Hoffm.) Llano, 1950
| Common name | Blackened Toadskin |
|---|---|
| Code | LASAPEN |
| Field Characters | Large, foliose umbilicate chlorolichen. Thalli composed of undivided lobes up to 18 cm across. Upper cortex dark brown to black to olive-brown, with blister-like pustules, each with a corresponding depression on the lower surface. Sometimes with marginal pruina. Lower surface black, often lighter towards the margins, lacking rhizines or papillae, may be smooth, rough like sand paper or papillate. Apothecia common, black with smooth disc, laminal |
| Similar species & genera |
Umbilicaria: may be pustulose, but pustules do not correspond to depressions on lower surface; spores are different as well if you have a fertile specimens and are in doubt.
This is the only Lasallia confirmed from Alberta. |
| Ecology | In the shield region on non-calcareous rock. |
| Chemistry | |
| Molecular support |
|
| Links | |
| Gallery | See links above |
