**1. Introduction**

Moss comes from two words, namely Bryon which means moss and Python which means moist or wet [1]. Several species of mosses which are still classified as thallus form faults and have never found further differences, but mosses are found which and body composition is close to the characteristics of higher plants, namely having stems, leaves, and rhizoids (still in a simple form) [2]. The characteristics of mosses have parts consisting of capsules, seta, leaves, stems (transition from thallus to cormus), and rhizoids (mosses do not yet have true roots) [1]. Moss is recorded to have approximately 18,000 species in the world and is a low-level plant group that ranks second after higher plants. While in Indonesia recorded 1500 species of moss that have been found. This is related to mosses that can live in humid areas because Indonesia is a tropical region which has humid areas so that it supports a lot of moss to live. Moss grows in clumps that cover the surface of the substrate such as weathered wood, litter, tree trunks, rocks, and leaves. Moss has several roles and benefits, one of which is an important component that plays a role in air balance and nutrient cycles

in an area, especially tropical rain forests. Lichens can act as pioneer plant nutrients in rich locations. Moss can also act as a bioindicator of environmental pollution in an area or area contaminated with pollutants [3]. This is because mosses have the opportunity to change the environment [4].

This is one of the interesting reasons in this study, the area that became the focus around the airport area which was originally a peat swamp and no human activity with developments that changed environmental conditions into a crowded location. In addition, the conditions around the airport have a view of humid conditions. Environmental changes are also affected by the biodiversity in the area. Thus, this study aims to reveal the diversity of mosses around the Syamsudin Noor international airport area, Banjarbaru, South Kalimantan, Indonesia.
