Fig. 8From: Heterochrony and repurposing in the evolution of gymnosperm seed dispersal unitsSummary diagrams of leaf and bract anatomy observations for Ephedra breana, E. multiflora, E. triandra, and E. tweediana. A Seed cone bracts at Stage 1 (first row) and 3 (second row). B Pollen cone bracts at Stage 1. C Leaves from female plants: at the second node (young, first row) and at the 5th node (mature, second row). D Leaves from male plants: at the second node (young, first row) and at the 5th node (mature, second row). Refer to figure inset for the meaning of colors and symbolsBack to article page