One of the most common mosses in urban settlements is Tortula muralis, or wall screw-moss.
城市居住区内最常见的苔藓之一是墙藓，也叫墙螺旋藓。
英语百科
Urban settlement
An Urban settlement is a concentrated settlement that constitutes or is part of an urban area. It is an area with high density of human-created structures.
The term has official meanings referring to settlements in urban areas in various nations, including: