At Level 1, only two life forms exist (woody plants or non-woody plants). In contrast, at Level 2, many more detailed categories of growth forms are used. The term growth form is used in a broad sense to describe the form or shape of individual plants (e.g. tree, shrub) or Australian broad floristic land cover types (e.g. native vegetation such as mallee, chenopod shrub; or non-native vegetation such as wheat fields, orchards). The following glossary (modified from ESCAVI 2003 and alphabetised by growth form name) defines the growth forms for structural formations.
Page 88 to 93 of the National Committee on Soil Terrain, National Committee on Soil Terrain, CSIRO Publishing, & Ebooks Corporation. (2009). Australian soil and land survey : Field handbook (3rd ed., Australian soil and land survey handbook; v. 1). Collingwood, Vic.: CSIRO Publishing.
Some values that do not exist in the Yellow Book have been added to the collection, such as Epiphyte and Lower plant. See https://www.environment.gov.au/land/publications/australian-vegetation-attribute-manual-v6/section-three-attributes-4#gf01 "Look-up table for: GROWTH FORM CODE".
TERN is supported by the Australian Government through the National Collaborative Research Infrastructure Strategy, NCRIS.