Two new species of saxicolous Pyxine with yellow medulla from southern India

Two new species of Pyxine with yellow medulla from saxicolous habitats are described as new to science. The new species P. punensis has an isidiate, UV+ yellow thallus with 0.3-0.6 mm wide lobes. Pyxine yercaudensis has smaller ascospores (13-16 x 6-7 mu m), lacks vegetative propagules and lacks lichexanthone.