Lichen Set for biology and life science clarifies that lichens are not plants but representatives of complex symbiotic associations between algal and fungal species. Set includes three common types of lichens.
Most often mistaken for plants, lichens actually represent complex symbiotic associations between algal and fungal species. Notable as pioneer species in the process of ecological succession and as residents of environments that few other organisms can tolerate. Although they seem to thrive under inhospitable conditions, lichens are highly susceptible to pollution and are often seen as natural indicators of air quality. Set includes examples of the three most common morphological types of lichens: foliose, crustose and fruticose. Species vary.