The Language of Classifying | 79Graphical RepresentationsIn addition to text, there are several graphical formats in our corpus that are used to represent classiations. They include: 1. Classiation trees and wcharts 2. Diagrams 3. Line drawings 4. Sentence lists 5. Pictures/Photos 6. Classiation tables 7. Charts The most common device is the classiation table (twenty-seven instances), followed by photographs (eighteen instances), classiation trees and wcharts (seventeen instances), and sentence lists (thirteen instances). Here are a few observations on these items: Pic tures. Pictures may seem an unlikely way to represent a classiation. But judging from their frequency, they are quite popular. Pictures function in three different ways: (1) The superordinate concept is discussed or mentioned in the text but not the species or item, which appears only in the photograph (B244, 246, 275, 287; C31, 208). For example:Figure 18.5 illustrates some of the diversity that exists among the club fungus. (B243) [SD: This is followed by photographs of three different species.] Spiders generally are eight-legged many-eyed predators (Figure 19.26). (B274) [Note: followed by photos of three different species. Note also that there is a numerical but no verbal reference to the pictures.](2) Both superordinate and hyponyms are discussed in the text, and several hyponyms are illustrated in pictures (B252, 275). For example:Seedless vascular plants once dominated the land (Figure 18.14). Existing members of this group include the lycophytes, horsetails, and ferns. (B249) [SD: followed by photos of the three existing species plus an historical reconstruction.](3) Superordinate and hyponyms are discussed in the text, but at considerable length, sometimes over several pages (B218, 288; C208). In this case, the pictures of speci species serve as visual summaries. Classification Tables. The tables in our corpus contain between two and e levels of classiation in addition to a superordinate term in text or heading. About half the tables do not include speci species or examples. This is true even for one that contains e levels of classiation
