1. Leaves alternate, needle-like but deciduous, soft and pliable in 2-ranked flattened sprays.
1. Leaves opposite or whorled, evergreen, scale-like or if needle like, then hard, sharply pointed, and not 2-ranked.
2. Mature female cones fleshy and berry-like, up to 8 (–10) mm long, green or bluish, the scales fused; leaves opposite or whorled, needle-like, or if scale-like and appressed then quite uniform (none keeled) and ultimate branchlets ± quadrangular.
2. Mature female cones brown and ± woody, ca. 8–15 mm long, the elongate scales distinct; leaves all opposite and appressed, scale-like, dimorphic (a pair of opposite strongly keeled leaves at right angles to adjacent pair of flat leaves), ultimate branchlets strongly flattened.
All species found in Cupressaceae
MICHIGAN FLORA ONLINE. A. A. Reznicek, E. G. Voss, & B. S. Walters. February 2011. University of Michigan. Web. September 24, 2017. http://michiganflora.net/family.aspx?id=CUPRESSACEAE.