Hymenophyllales is an order of plants. There are 617 species of Hymenophyllales, in 9 genera and 1 family. It includes groups like Filmy Ferns. They have alternation of generations.
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)