Fig. 5. A, Grevillea beadleana pollen presenter 24 h post‐anthesis. Arrow shows stigmatic exudate at the right of the stigmatic papillae. Stigma is not ripe as papillae have yet to grow and separate. The stigmatic groove is not yet evident. Bar = 71·25 µm. B, At 36 h after anthesis stigmatic papillae are still positioned close together, but stigmatic exudate appears less abundant than at 24 h. Bar = 60·27 µm. C, At 48 h after anthesis papillae have begun to separate revealing the slit‐like stigmatic groove. Stigmatic exudate remains attached to the papillae (centre). Bar = 65·99 µm. D, At 60 h post‐anthesis the stigmatic papillae have separated further and there is less evidence of stigmatic exudate. Arrow points to stigmatic groove. Bar = 30 µm. E, Stigmatic region 72 h post‐anthesis. The stigmatic groove appears to be lengthening as well as widening. Exudate covers some of the papillae (centre left) which have yet to extend and separate. Bar = 59·37 µm. F, The stigmatic papillae have separated fully after 120 h, exposing the underlying receptive surface of the stigma. The groove has widened to approx. 50 µm, exposing the stigmatic surface underneath. Bar = 51·43 µm. G, Arrow indicates a pollen grain that is held close to the opening of the stigmatic area by widely separated stigmatic papillae. It is not known whether the pollen grain has germinated. Bar = 53·98 µm.