Hypotrachyna himalayana Divakar & Kirika

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 : 200

6. Hypotrachyna himalayana Divakar & Kirika

The Bryologist 119 (2): 178 (2016).

SELECTED SPECIMENS EXAMINED. — Colombia, prope Bogota; 8500 ft s.m.; J. Weir 5 pr. p. ( H. sorocheila , holo-, BM[BM]).

China, Yunnan Prov., Lijiang Co., Ganheba Vil.; 26°52’28.68”N, 100°14’9.545”E; 3000 m, on bark; 22.IX.1987; J. C. Wei 9282 ( HMAS). Xundian Co., Hekou Vil., Xuzhao Temple; 25°38’23.97”N, 103°22’58.91”E; 1900 m, on bark; 16. VI.2015; X. Y. Wang 15- 47332. Guizhou Prov., Shiqian Co., Shigu Forest reserve; 900 m, on decaying bark; 11.VII.1988; L. S. Wang 88-21186. Xizang Prov., Nyalam Co., Quxiang Vil.; 28°6’5.115”N, 85°34’11.99”E; 3550 m, on bark; 19. V.1966; J. C. Wei 926, 929-1 ( HMAS).

NOTES

For a detailed description, see Kirika et al. (2016).

This species can be distinguished by the lip-shaped soralia growing on the lower surface of the lobe tips and by containing atranorin and salazinic acid as the main compounds. It is distinguished from other sorediate species in China as follows. It differs from H. catawbiensis by its anchor-shaped soralia on the lobe tips, while in H. catawbiensis , the soralia are usually laminal. Furthermore, it contains gyrophoric acid (medulla K-, C+ red) instead of salazinic acid (medulla K+ yellow turning red, C-). H. subsorocheila has wider and shorter lobes, the upper surface is pustulate and forms soralia, and salazinic and gyrophoric acids are absent (medulla K-, C-); it has characters identical to those in H. sorocheila but is distinct in its position on the phylogenetic tree and its geographic distribution, as it is restricted to Asia, whereas H.sorocheila is mainly distributed in South America and currently not known from Asia ( Kirika et al. 2016). Moreover, these two species formed two distinct clades in the tree ( Fig. 1 ), consistent with the result of Kirika. Thus, the previous report of H. sorocheila in China ( Chen et al. 2015) should be revised as H. himalayana .

Figures

FIG. 1. — Phylogenetic tree generated from maximum likelihood (ML) analysis based on ITS sequence data. ML bootstrap support values greater than 70% and Bayesian posterior probabilities (PPs) greater than 0.95 are given above the nodes. New species are indicated in bold. “TYPE” refers to the sequences of types, “TOPO” for specimens that come from the type locality. Scale bar: 0.02 substitutions.