Hypotrachyna mexicana (Egan) Divakar, A.Crespo, Sipman, Elix & Lumbsch

Wang, Xin Yu, Zhang, Yan Yun, Liu, Dong, Li, Li Juan, Yang, Mei Xia, Yin, An Cheng & Wang, Li Song, 2020, Taxonomic study of Hypotrachyna subg. Everniastrum (Hale ex Sipman) Divakar, A. Crespo, Sipman, Elix & Lumbsch (Ascomycota) from China, Cryptogamie, Mycologie 20 (12), pp. 193-209 : 202

8. Hypotrachyna mexicana (Egan) Divakar, A.Crespo, Sipman, Elix & Lumbsch

Phytotaxa 132 (1): 31 (2013).

SELECTED SPECIMENS EXAMINED. — Mexico, Jalisco:Combre de Tejamanil, Mpio. de Jalapa; 2200 m, on trees; 25.X.1971; González, 1971 (holo-, US[US]).

China, Yunnan Prov., Fengshan Co., Fengshan Mt; 1650 m, on Camelia bark; 11.X.1959; Q. Z. Wang 2a ( HMAS); Tengchong Co., Gaoligongshan Mt; 25°17’56”N, 98°42’12”E; 2048 m, on bark; 11.VII.2014; W. Z. Ma 14-L5738; Nanjian Co., Fenghuangshan Mt; 24°53’56.34”N, 100°19’49.66”E; 2340 m, on Pinus bark; 14. VI.2012; L. S. Wang 12-34294.

NOTES

For a detailed description, see Egan (1978).

This species is characterized by the absence of salazinic acid and by a white to pale brown lower surface with sparse rhizines. The marginal cilia are sparse and short but sometimes numerous and long, up to 2 mm long ( Culberson & Culberson 1981). This species resembles H. cirrhata in morphology but differs in the absence of salazinic acid, the presence of protocetraric acid (medulla K-, KC + pale red), and a white lower surface near the tips.