[1] A few years later Asano and Yosio Arata further purified the crude material from this lichen, ultimately obtaining an orange-yellow compound with a molecular formula of C16H12O6.

[2] In 1949,[3] T. R. Seshadri and S. Subramanian described their work with the Indian lichen Teloschistes flavicans, in which they isolated an orange substance they named teloschistin, and which had a structural formula identical to that of fallacin proposed by Asano and Arata years earlier.

[4] In 1956, Takao Murakami reported reexamining the crude pigment obtainable from Xanthoria fallax using Asano's original 1936 procedure.

[6] The cultivated mycobiont of Xanthoria fallax, grown in isolation with the green algal photobiont, still produces fallacinal.

[8] In 1970, the Swedish chemist Johan Santesson proposed a possible biogenetic relationship between the anthraquinone compounds commonly found in the lichen genus Caloplaca.