The identity of Lecanora ecorticata has been uncertain due to conflicting reports of the presence of zeorin and the loss of the holotype. Phylogenetic analysis suggests that the species probably belongs in Ramalinaceae, where it is the first leprose species reported. Zeorin was found to be absent in recently collected material of L. ecorticata, including specimens from the type locality, and the report of zeorin in the lost holotype is considered to be due to contamination. A new genus, Lithocalla, is erected to accommodate L. ecorticata and a second closely related species, that occurs in the Falkland Islands, is newly combined as Lithocalla malouina. A lectotype is selected for L. ecorticata. Lithocalla is characterized by a leprose thallus containing usnic acid with fatty acids and terpenoids, but no zeorin; ascomata and conidiomata are unknown.

中文翻译：

---

Lithocalla (Ascomycota, Lecanorales)，一种新的麻风地衣属，含有松萝酸

的身份荠菜由于 zeorin 的存在和正模标本丢失的相互矛盾的报道，一直不确定。系统发育分析表明该物种可能属于树莓科，这是报告的第一个麻风病物种。在最近收集的材料中发现没有 ZeorinL.ecorticata, 包括来自模式产地的标本, 并在丢失的正模标本中报告了 zeorin 被认为是由于污染造成的。一个新的属，石芋, 被竖立以容纳L.ecorticata第二个密切相关的物种，发生在福克兰群岛，新组合为石芋. 选型被选为L.ecorticata.石芋特征是麻风菌体含有松萝酸、脂肪酸和萜类化合物，但不含玉米油；子囊和分生孢子是未知的。