In a study of the river spora of Ravi, Lahore, twenty-nine conidial  species mostly belonging to freshwater hyphomycetes were recorded by four techniques from January to June, 1999. These species were recorded by filtration of water, sporulation on submerged plant material and trapping in natural or artificial foam. The natural foam provided the richest data on the river spora. A few species were observed colonizing the submerged plant material. The data obtained by direct filtration and artificial foam trapping was quite similar. Articulospora proliferata and Tetracladium marchalianum were the only species detected by all the four techniques.