Character states
Microgametophytes with distal aperture present
Microgametophytes with proximal suture absent
Microgametophytes with proximal suture present
Microgametophytes with distal aperture absent
Adaxial pollen sac attachment absent
Adaxial pollen sac attachment present
Pollen sacs attached adaxially between the cone axis and halfway the sporophyll
Pollen sacs attached to the stalk attached
Pollen sacs attached to the distal lamina