12). Intermediate types include leprose and squamulose lichen, among others. The examples are: 1. While collecting lichens it is necessary to look for such structures with the help of hand lens. no seeds or flowers. July 2004. It is generally restricted to a narrow zone below the surface. Crustose lichen, Lecanora chlarotera . There are three major types of lichen — crustose, foliose, and fructicose — each of which has its own shape, structure, and environmental preferences. Lichens are often referred to as lichenized fungi and it is the fungal partner on which the classification of a lichen is based. https://www.anbg.gov.au/lichen/form-structure-reproduction.html Parmelia: It is a common example of a foliose lichen which is found growing on the bark as well as the rock intermixed with the mosses at higher altitude (above 4,000 ft.). The lichen shape is vital in lichen identification. Crustose lichens are flat, thin and without any distinct lobes. Some crustose lichens belonging to family Graphidaceae bear worm like structures, which are nothing but the modified apothecia, and are called as lirellate apothecia (Fig. This is an illustration of a crustose lichen… Therefore lichen classification is part of the subject of fungal classification. 2. Crustose Lichens . Lichens are made up of two organisms — fungus and algae — that live together as one. ... Tree diagrams. In shape, the lichens are of three types: Crustose (Graphis, Lecanora)Foliose (Parmelia, Peltigera)Fruticose (Cladonia, Usnea)The bulk of lichen is formed by fungal partner or mycobiont. Example # 1. Haematomma puniceum and Graphic scripta are the best examples of crustose lichens. 1. Foliose Lichens . Lichen thallus which is generally "leaf-like", in appearance and attached to the substrate at various points by root-like structures called rhizines. These are the flat coloured splotches you see on stones and tree bark (and are really hard to draw!) Lichens are a type of symbiotic organism made up of a plantlike partner and a fungus. The tissues forming the thallus are arranged more or less in strata one above the other. Foliose Lichens. First, you get CRUSTOSE lichen which form a thin crust on their substrate. (b) Crustose lichen: The crustose lichens, which have very poorly defined thallus, in general, have a similar structure but the development of the different layers is not so complete like that of foliose lichen. MOSS and LICHEN NATURE is NEAT raisingupwildthings.com { } CRUSTY (CRUSTOSE) LEAFY (FOLIOSE) SHRUBBY (FRUTICOSE) Some Moss Types Basic Lichen Shapes Lichens grow all over the world, in many different environments. Usnea. Parmelia 2. In the traditional sense of lichens, their thallus can be artificially divided into four forms: foliose, crustose and fruticose. Green crustose lichens cover the basalt boulders that form the south buttress of Pollock Mountain. 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