1 "Leaves pinnately compound, with leaflets oftern showing circinate vernation, plants palm like" Cycadaceae 1 "Leave simple, without circinate versnation; plants not palmlike" 2 2 "Stem jointed and grooved, leaves reduced to scales, shrubs" Ephedraceae 2 "Stem not jointed; leaves fan shaped, needle or scale like, trees or arborescent shrubs" 3 3 "Leaves fans shaped, with dichotomous venation" Ginkgoaceae 3 "Leaves needle like, linear, scalelike, solitary or in groups" 4 4 "Ovule and seeds 1 per cone scale; leaves either linear, needlelike or scalelike" Araucariaceae 4 "Ovule and seeds usually 2 or more per cone scale; leaves either linear, needlelike or scalelike" 5 5 "Leaves needle like or linear, not scalelike; cone scales overlapping,not peltate, with a free abaxial bract" Pinaceae 5 "Leaves scale like, awlshaped, needlelike, or scalelike; cone scales not overlapping, opposite, sometimes peltate, without a free abaxial bract" Cupressaceae