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 genus, Rubus or Cunonia, contains the largest number of individual species?" whose answer is Rubus.
Each document should contain about 30 words, and these documents should contain useful information.

Query: Rubus number of species
Useful Output:

Doc 1: In response to this, taxonomists disagree broadly about the number of species in the genus, with different estimates ranging from 250 (
Doc 2: Rubus is the largest genus in the family Rosaceae, with approximately 700 species. Plants are widely distributed in the temperate and sub-
Doc 3: The genus Rubus includes 600-800 species, which are mainly distributed in hilly regions of Asia, Europe, Africa and North-America. The berry of
Doc 4: Growth habit, occurrence and use. Rubus is a large and complex genus with 12 subgenera. The 2 largest subgenera and those most important in North America
Doc 5: The Rubus genus is large and diverse and Flora Europaea lists 75 species (Tutin et al 1968). It includes deciduous or semi-evergreen perennial herbs or