FIGURE 2 in Leprose and leproid lichens of the Galapagos, with a particular focus on Lepraria (Stereocaulaceae) and Septotrapelia (Pilocarpaceae)

FIGURE 2. Galapagos leprose and leproid lichen species that occasionally bear apothecia; a–b Abundantly sorediate thalli of Brigantiaea leucoxantha s.l.; a Overview of the granular sorediate (leproid) thallus with rusty orange, lecanorine apothecia with olive orange, yellowish pruinose disk; photograph of fresh, humid material in the field (Bungartz 5602; scale 2 mm); b Close-up of the heavily granular sorediate thallus with few bright orange apothecia; herbarium material (Bungartz 3473; scale 2 mm); c Overview of the granular sorediate (leproid) thallus of Catillochroma pulverea with deep brownish to blackened apothecia (Bungartz 3964; scale 2 mm); d Overview of the brownish beige granular sorediate (leproid) thallus of Pyrrhospora quernea with deep reddish brown biatorine-lecideine apothecia; fertile material collected in California (Bungartz 8078; scale 4 mm); Galapagos material (not pictured) has so far only been found sterile; e Leproid thallus of Lecanora sp.; the fuzzy appearance of the granulose soredia caused by terpenoid crystals forming in the herbarium; the main thallus almost entirely dissolved; fertile material not known from Galapagos (Aptroot 65410; scale 0.5 mm); f Leproid thallus of Vainionora aemulans formed almost entirely by granular soredia; the main thallus almost entirely dissolved; fertile material not known from Galapagos (Aptroot 65060; scale 0.8 mm).