Fig. 4. Vascular patterning in wild type, sty1-1 and sty1-1 sty2-1 gynoecia at anthesis. In each gynoecium, the points of bifurcation of the medial veins are indicated with arrowheads. Medial views of (A) a wild-type gynoecium showing medial veins bifurcating just below the style and medial xylem fans extending along the medial side of the style; (B) a sty1-1 gynoecium in which the point of bifurcation of the medial veins is basalized and the medial xylem fans are located laterally on the style; (C) a sty1-1 sty2-1 gynoecium in which the point of bifurcation of the medial veins is basalized and medial xylem fan formation is greatly reduced. Note that pollen grains appear as white spots. Scale bar: 100 µm.

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