FIGURE 7 in Pollen morphology of selected taxa of Valeriana (Caprifoliaceae): taxonomic and evolutionary implications

FIGURE 7. Box plots illustrating the variation of polar axis (A) and equatorial diameter (B) of Valeriana pollen grains. 1. V. montana. 2. V. tripteris. 3. V. supina. 4. V. transsilvanica. 5. V. pyrenaica. 6. V. dioica. 7. V. simplicifolia. 8. V. wolgensis. 9. V. stolonifera. 10. V. angustifolia. 11. V. sambucifolia. 12. V. officinalis. 13. V. exaltata. 14. V. grossheimii. 15. V. rossica. 16. V. tuberosa. 17. V. alliariifolia.