1	"Leaves alternate, linear or awl-like"	2
1	"Leaves opposite or whorled, scale-like to less often awl- or needle-like"	3
2	"Leaves on sprouting, rapidly growing, or fertile stems awl-like, appressed, not ranked, < 8 mm, on other stems linear (to lance-linear), spreading, +- 2-ranked, 5--25 mm; seed cone 13--35 mm"	"Sequoia {Sequoia sempervirens}"
2	"Leaves awl-like, appressed, +- 4-ranked, < 15 mm; seed cone 40--90 mm"	"Sequoiadendron {Sequoiadendron giganteum}"
3	"Seed cone +- fleshy, berry-like, scales fused; seed wing 0; leaves whorled in 3s or not"	Juniperus
3	"Seed cone woody, not berry-like, scales +- free; seed wing present, vestigial or not; leaves not whorled in 3s"	4
4	"Seed cone +- oblong, scales not peltate, +- overlapping; seeds (1)2 per fertile scale"	5
4	"Seed cone +- spheric to widely cylindric, scales peltate, abutting; seeds generally many per fertile scale"	6
5	"Seed cone +- pendent, scales in 3 pairs, middle pair fertile; leaves opposite, appearing whorled in 4s, exposed part of each leaf longer than wide; seed wings unequal"	"Calocedrus {Calocedrus decurrens}"
5	"Seed cone erect to reflexed, scales in 4--6 pairs, middle 2--3 pairs fertile; leaves opposite, +- not appearing whorled in 4s; exposed part of each leaf +- as long as wide; seed wings +- equal"	"Thuja {Thuja plicata}"
6	"Seed cone maturing 1st year, scale projection generally present, <= 1 mm, base depressed from edge; leaves of 2 kinds"	"Chamaecyparis {Chamaecyparis lawsoniana}"
6	"Seed cone maturing 2nd year, scale projection generally > 1 mm, especially 1st year, base level with or rising from edge; leaves of 1 kind (except <i>Callitropsis</i>)"	7
7	"Ultimate 3 orders of shoots in 2-dimensional, pendent clusters; seed cone opening, falling at maturity, scales generally 4--6"	"Callitropsis {Callitropsis nootkatensis}"
7	"Ultimate 3 orders of shoots in 3-dimensional, spreading clusters (except sometimes <i>Hesperocyparis macnabiana</i>); seed cone generally closed, falling many years after maturity, scales generally 6--12"	Hesperocyparis