Three species of the Cladonia pyxidata-chlorophaea complex new to Latvia

The study of the Cladonia pyxidata-chlorophaea complex in Latvia is based on the revision of 276 specimens from the two largest lichen herbarium collections in Latvia. Nine species belonging to the Cladonia pyxidata-chlorophaea complex were determined using TLC and morphological studies – C. chlorophaea, C. cryptochlorophaea, C. fimbriata, C. grayi, C. humilis, C. merochlorophaea, C. novochlorophaea, C. pocillum and C. pyxidata. Of these, three species are reported as new to Latvia – C. cryptochlorophaea, C. merochlorophaea, and C. novochlorophaea. Information regarding the morphology, secondary chemistry, ecology, and localities of the newly reported species is provided.