Urban air quality is considered a major issue in cities worldwide, with particulate matter (PM)
recognised as one of the most harmful pollutants regarding human health. The use of plants
to act as air filters and immobilise PM has been identified as a potential method to improve
the air quality in these areas. The majority of the work has focused on trees, with the
application of shrub and herbaceous species largely overlooked. Two contrasting leaf
morphologies from a shrub and herbaceous plant species were sampled at four locations …