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: "Who has more species, Macleaya or Mammillaria?" whose answer is Mammillaria.
Each document should contain about 30 words, and these documents should contain useful information.

Query: number of species in Mammillaria genus
Useful Output:

Doc 1: With its nearly 200 species, the Mammillaria genus is the most species-rich within the Cactaceae family, yet surprisingly, few of its
Doc 2: The subgenus Mammillaria contains the highest number of species (117)  genera studied with emphasis on the taxa sampled in the genus Mammillaria
Doc 3: Mammillaria includes 143 species (Korotkova & al. 2021), divided into five subgenera, three sections and 16 series (Hunt & al. 2006). The number
Doc 4: Mammillaria, large genus of some 200 species of low-growing cacti (family Cactaceae) native to the Western Hemisphere and concentrated in Mexico.
Doc 5: pectinifera (genus Solisia), M. solisioides and M. herrerae , including all the species in a new series Pectiniferae. It is an interesting hypothesis.