Fig. 7.

Solanum pimpinellifolium rotate flower development. a Sepals develop asymmetrically and fuse at their base to form a fused ring. b, c Removal of sepals reveals development of petals and stamens, followed by carpel development (c). d–h Petals are fused at the base above the stamen attachment point (visible in g) from early development (d); however, most of the petal margin is free. i Late carpel development. j By 2 mm flower diameter, when anther thecae are well established, petals are mostly free, but remain partially fused at the base. Scale bars = 100 μm, and bud diameter also provided in bottom right corner. s, sepal; p, petal; st, stamen; tri, trichome; fus, corolla fusion; fil, anther filament; g, gynoecium; sty, style