Fig. 7–15. Megasporogenesis of Manekia naranjoana (Piperaceae). 7. Metaphase, 8. anaphase. and 9. telophase of archesporial cell. 10. Megasporocyte and parietal tissue. 11. Mature megasporocyte. 12. Megasporocyte, early prophase. 13. a, b. Anaphase of meiosis I. 14. a–c. Meiosis II of the megasporocyte, showing perpendicular orientation of chalazal and micropylar dyad meiotic spindles. 15. a, b. Four megaspores in coenocyte. Figs. 13 and 14 are from adjacent serial sections; Fig. 15 is from nonadjacent sections. Micropylar pole at top of all figures. Scale bars = 10 µm.