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 has a smaller distribution, Barklya or Illicium?" whose answer is Barklya.
Each document should contain about 30 words, and these documents should contain useful information.

Query: distribution of Barklya
Useful Output:

Doc 1:  (Barklya), or markedly unequal (8); including staminodia (6), or comprising  distribution, and classification. See also Guidelines for using data
Doc 2: Barklya syringifolia Fabaceae. Castanospermum australe Fabaceae. Indigofera  distributions in a successional sere. Ecology 63:921-931. Grubb PJ (1977)
Doc 3: Barklya/Lysiphyllum/Phanera/Cheniella(4)  Distribution of nitrogen fixation and nitrogenase-like sequences · amongst microbial genomes.
Doc 4: Barklya, Schnella, Lysiphyllum, Cheniella, Phanera, Piliostigma  Synonymic Checklist and Distribution of the World Flora. Version
Doc 5: What's Flowering? #CrownOfGold Barklya syringifolia #Fabaceae Rainforest Tree - Distribution: QLD & NSW #OzPlants.