Hypogymnia key
Key to Hypogymnia, derived from Louwhoff (2009). | ||
1. | Soralia discrete, confined to ends of lobes | 2 |
Soralia diffuse, laminal, irregularly spreading; usually on coniferous bark, northern distribution | Hypogymnia farinacea | |
2. | Lobe ends tubular, with capitate soralia at the apices; widespread, on angiosperm bark | Hypogymnia tubulosa |
Lobe ends flattened, the soralia formed from horizontal splits at the apex which then become lip-shaped | 3 | |
3. | Upper surface grey with fan-like soralia at the lobe apices; medulla Pd+ orange to red; very widespread, mostly on angiosperm bark | Hypogymnia physodes |
Upper surface brownish discoloured with gnarled soralia at the lobe apices; medulla Pd–; rare, on the ground in dunes, N Scotland | Hypogymnia vittata |