Digitaria (Crabgrass) is a genus of grass in the family true grasses. They are native to Canada, US Minor Outlying Islands, Puerto Rico, The Contiguous United States, U.S. Virgin Islands, and Pacific Basin excluding Hawaii.
Definition: This organism produces this material or substance, either during its life or after death. A produces B if some process that occurs in A has output B.
Definition: A group of species that exploit the same food resources, and/or use the same feeding or foraging methods. http://en.wikipedia.org/wiki/Guild_(ecology)
Definition: The institution that holds a type specimen for a given species. The recommended best practice is to use the identifier in a collections registry such as the Biodiversity Collections Index (http://www.biodiversitycollectionsindex.org/).
