You are the Google search engine.
Given a query, you need to generate five useful documents for the query.

The user is trying to answer the question: "Which contains more species of flowering plants, Indigofera or Matthiola?" whose answer is Indigofera.
Each document should contain about 30 words, and these documents should contain useful information.

Query: number of species in Indigofera
Useful Output:

Doc 1: 2018 ), Leguminosae are represented by 39 genera (5% endemic to the island), 103 species (32% endemic), 6 subspecies and 13 varieties. General
Doc 2: Five indigo-yielding plant species (from four plant families and four genera) were historically used by Hainan Miao and Li dyers. However, just
Doc 3: According to the Results and Discussion this research revealed that, 20 species of Indigofera genera by the evidence of books and 04 species
Doc 4: The genus Indigofera L., comprising approximately 750 species, is the third largest genus after Astragalus and Acacia s.l. in the legume family
Doc 5: The main species cultivated for this purpose were Indigofera tinctoria and I. suffruticosa (formerly I. anil) and both of these species are