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: "Between Purshia and Juniper, which genus has more species?" whose answer is Juniper.
Each document should contain about 30 words, and these documents should contain useful information.

Query: number of species in Purshia genus
Useful Output:

Doc 1: The Bylas population consists mainly of plants with mostly entire leaves and without stipitate glands, although some collections from that
Doc 2: Species 6 (4 in the flora). This treatment combines Cowania (with 3–31 carpels that develop into wind-dispersed achenes with plumose awns)
Doc 3: species. Purshia tridentata (Pursh) D.C. (bitterbrush or antelope brush) is in one of three rosaceous shrub genera reported to bear nodules
Doc 4: Purshia stansburiana · Genus. Centranthera R.Br. Centranthera indica. Centranthera grandiflora. Centranthera indica · Species. Purshia hispida (Michx.) Lehm.
Doc 5: Purshia stansburiana, Common name: Cliffrose, Pronunciation: poor-SHE-ah stans-BUR-i-ana, Family: Rosaceae, Genus: Purshia, Synonyms: Cowania stansburiana.