The lichens along with their natural substratum colonize a variety of man-made substratum. After about half a century of lichenological research in India, there has been no record of lichen colonization on the man-made artificial substratum. The authors here for the first time report colonization of five species of lichens on three samples from two unusual habitats—iron railway sleepers—Heterodermia galactophylla (Tuck.) W.L. Culb. and abandoned woolen socks—Xanthoparmelia bellatula (Kurok. & Filson) Elix & J. Johnst., Physcia gomukhensis D.D. Awasthi & S.R. Singh, Xanthoparmelia congensis (J. Steiner) Hale and Xanthoria candelaria (L.) Th. Fr. in western Himalaya. Two supplementary tables (S1 and S2) are provided, giving details of collection sites and lichen species identified in each sample. The study revealed the extended geographical distribution of the two lichen species, i.e., Heterodermia galactophylla (Tuck.) W.L. Culb and Physcia gomukhensis D.D. Awasthi & S.R. Singh, highlighting the importance of such studies of unusual habitats in lichen diversity and preparation of their inventories.

中文翻译：

---

喜马拉雅西部异常人造基质的地衣定殖

地衣及其天然基质定居在各种人造基质中。在印度进行了大约半个世纪的地衣学研究之后，在人造人工基质上尚无地衣定殖的记录。作者首次在此报道了来自两个不寻常生境的三个样本（铁轨枕），半乳糖异形藻（Tuck。）WL Culb上五种地衣的定殖。和废弃的羊毛袜-Xanthoparmelia bellatula（Kurok。＆Filson）Elix＆J. Johnst。，Physcia gomukhensis DD Awasthi和SR Singh，Xanthoparmelia congensis（J. Steiner）Hale和Xanthoria candelaria（L.）Th。神父 在喜马拉雅山西部。提供了两个补充表（S1和S2），详细列出了每个样品中鉴定到的采集地点和地衣物种。该研究揭示了这两个地衣物种的扩展地域分布，即Heterodermia galactophylla（塔克）WL Culb和蜈蚣gomukhensis DD Awasthi和SR辛格，凸显地衣多样性和准备他们的库存不寻常的栖息地的此类研究的重要性。