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Main conclusions Using 227 dicotyledonous species in temperate region, we found the relationships among densities of different-order veins, creating diversity of leaf vascular architectures. Abstract Dicotyledonous angiosperms commonly possess a hierarchical leaf vascular system, wherein veins of different orders have different functions. Minor vein spacing determines leaf hydraulic efficiency,...
Key message Minor vein traits have a stronger association with leaf water deficit tolerance and structural properties than major veins in deciduous woody species. Abstract Hierarchical leaf venation commonly occurs in angiosperms, with veins of different orders. Physiological roles and costs of minor veins (> third order) are well documented; however, those of major veins (first to third order)...
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