الفهرس 
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Abstract
The present work is an attempt to investigate the suitability of Egyptian mosses as a bioindicator of air pollution by heavy metals. For achieving this purpose, excursions were carried out once during summer, 1997. Twenty-three sites were selected in five different regions distributed in two provinces (Cairo & Qualiobiya) in Great Cairo These regions are Kobry El-Kobba (K1-11), Abbassia (Ab1) & Amiria (Am1-3) in Cairo and Sariaqus (S1-6) & Abu-Zaabal (AZ1,2) in Qualiobiya. Most of these 23 sites are in the neighborhood of pollutants emission. Other sites are far away from pollutants emission.
Notes were put down in the field concerning habit and habitat of each moss species.
Laboratory work included identification, description, sectioning of Specimens and photography.
Seven moss species were recorded. These species are Barbula unguiculata Hedw, Bryum bicolor Dicks, Bryum sp1, Bryum sp2 Bryum sp3, Funaria hygrometrica Hedw and Physcomitrium pynforme (Hedw) Brid. Two only of these mosses (F. hygromitrium & Ph. pynforme) carried sporophytes.
The present study included the analysis of the heavy metals (Pb, Cu, Zn, Cd, Mn & Fe) in plant tissue, soil substrate and water in the Vicinity of the studied mosses as well as on the plant surface of these mosses.