Fig. 3.

Early stages of floral ontogeny in Eugenia punicifolia. Stage 1a: (A) Early sepal development showing transverse bracteoles (removed), and first and second pair of sepals. S1* appears to be slightly older, a discrepancy only noticeable at this stage. (B, C) Early sepal development. Sepals enclose the bud; single-celled hairs develop at the tips of the sepals (arrow in C). Stage 1b: (D) Petal initiation; four petals arising almost simultaneously as bulges alternate with sepals. (E, F) Continuously growing petals eventually meeting in the middle of the bud. Stage 2a: (G, H) Petals overlap; one sepal and one bracteole left to highlight proportion between organs. (H) Lateral view, showing first stamen initiation [A1(1st)] flanking the petals. (I) As (G) and (H), but in frontal view; calyx and corolla removed; first group of stamen primordia prominent. Stage 2b: (J) Proto-style developing upwards (arrow) and initiation of second staminal whorl; stamens of the first whorl similar in size. (K) Detail of (J), showing stamen primordia covering the hypanthium below the first staminal girdle. (L) Same stage as (J), but further dissected and in lateral view; gynoecium depression (ovary) expands downwards while proto-style grows upwards. Bt, bracteole; S, sepals; P, petals; A, androecium; G, gynoecium; H, hypanthium. Bracteoles removed in all. Scale bars: (K) = 5 µm; (A–E, G–I, L) = 100 µm; (F, J) = 250 µm. Colour coding in online version: sepals, green; corolla, red; androecium, yellow; gynoecium, blue.