Checklist of Plants of India

Buellia disciformis (Fr.) Mudd, Man. Brit. Lich.: 216. 1861.

Lecidea parasema var. disciformis  Fr., Nov. Sched. Critic: 9. 1826.

Hafellia disciformis (Fr.) Marbach & H.Mayrhofer in Marbach, Biblioth. Lichenol. 74: 264. 2000.

Lichen parasema Ach., Prodr. Lich.: 64. 1799, nom. illeg..

Lecidea parasema (Ach.) Ach., Methodus: 35. 1803.

Buellia parasema (Ach.) De Not., Nuovo Giorn. Bot. Ital. 2, 1, 1: 198. 1846.

India (Arunachal Pradesh, Himachal Pradesh, Maharashtra, Manipur, Tamil Nadu and West Bengal -hills), Australia, Great Britain, Canary Islands, New Zealand, Scandinavia, Socotra; Europe, North America. Cosmopolitan.