1. The exine is tectate and reticulate; pistillodes are not present. 2. In plant spores it is also referred to as the exine . 3. The exine is what is preserved in the fossil record. 4. The pollen is disculate and elliptic with tectate exine ; pistillode minute. 5. The pollen is elliptic and monosulcate with finely reticulate, tectate exine . 6. The pollen is elliptic, diporate with rugulate to reticulate, tectate exine . 7. The exine is finely reticulate and tectate. 8. The exine is 0.5 1 �m thick, with 2 3 �m long clavae or bacula. 9. It is a major component of the tough outer ( exine ) walls of plant spores and pollen grains. 10. Pollen apertures are regions of the pollen wall that may involve exine thinning or a significant reduction in exine thickness.