lifeForm (http://rs.gbif.org/terms/1.0/lifeForm) @return [String] A term describing the growth/lifeform of an organism. Should be based on a vocabulary like Raunkiær for plants: http://en.wikipedia.org/wiki/Raunkiær_plant life-form. Recommended vocabulary: http://rs.gbif.org/vocabulary/gbif/life_form.xml Vocabulary: http://rs.gbif.org/vocabulary/gbif/life_form.xml Examples: Phanerophyte