Question: Which genus includes more plants that produces flowers, Zanthoxylum or Legousia?
Related documents: [0]  [DOC] Legousia (Venus' looking glass) is a genus of flowering plants in the Campanulaceae (bellflower) family. [END] 
[1]  [DOC] Zanthoxylum (including genus "Fagara") is a genus of about 250 species of deciduous and evergreen trees and shrubs in the citrus or rue family, Rutaceae, native to warm temperate and subtropical areas worldwide. Several of the species have yellow heartwood, to which their generic name alludes. [END] 
Answer: 
Legousia
Legousia