Interaction between Bees and the Tristylous Flowers of Oxalis cytisoides Mart. & Zucc. (Oxalidaceae)

Figure 3

Pollen grains from Oxalis cytisoides. ((a)–(c)) Polar perspective for pollen grains from long (a), mid (b), and short (c) anthers. ((d)–(i)) Equatorial perspective for pollen grains in long ((d) and (g)), mid ((e) and (h)) and short ((f) and (i)) anthers. Capital letters are the floral morph (style height) and lower letters are the anthers from the pollen grain origin, for example: S l = pollen came from the long filaments (l) of the short styled morph (S).

(a)

(b)

(c)

(d)

(e)

(f)

(g)

(h)