FIGURE 3.

Flower development in Succisa pratensis (a–i) and Succisella inflexa (j–r). Adaxial side is toward the top in (a–h,i,m,o). (a,b) Initiation of epicalyx, appearance of sepals, and corolla ring (arrows). (c–f) Initiation of petals and stamens. (g,h) Enlargement of petals and appearance of carpel ring meristem. (i) Bristle-like sepals in mature flower. (j–r) The same developmental stages in S. inflexa. Note the late initiation of the calyx ring in (k) (arrow), the overlapping petal–stamen whorls in (l,m), and the inconspicuous sepals in (r). Abbreviations: abP, abaxial petal; C, carpel; E, epicalyx; O, ovary; P, petal; S, stamen; Se, sepal; St, stigma; Sy, style. Same scale for (a–h) and (j–p).