Pollen cones with 2-6 pairs of 2-4 pollen sacked sporophylls. They contain numerous sporophylls arranged in whorls or spirals. These spores develop on separate male and female sporophylls on separate male and female cones. Ovules are not born on sporophylls . The male pollen cones are 5-7 millimeters long with spirally arranged triangular sporophylls. The sporophylls have two round apical projections. The middle sporophylls are 19 mm high and just as wide. The sporophylls may have had vascular tissue. The sporophylls are 25 to 28 mm long. The sporophylls are 4.5 to 5 cm long. The middle sporophylls are about 30 mm high and 56 mm wide. The sporophylls are formed as lateral blades from the stipe. In some groups, the sporangia are borne on sporophylls that are clustered into strobili. Leaves that bear sporangia are called sporophylls. Cycads produce strobili, both pollen-producing and seed-producing, that are composed of sporophylls.