Each species will have pollen displaying unique traits, when looked at close enough. These photos are taken with an electron microscope. This is pollen from Socratea exorrhiza an extant beetle pollinated palm. Grains spinose & intectate. Fig 31 SEM X 2790. Fig 32 SEM X 9980 Swollen bases of spines appear to be tectal remnants. Surface ornamentation numerous modified distal tips of columellae Fig 33 TEM showing absence of tectum or roof layer. X 2,800 Fig 34 TEM: Note that spine is supported by shortened collumellae. X10,000. Illustrates unusual wall structure. Lost tectum may be adaptive modification in response to insect pollination. Note, X10,000, refers to the magnification level.