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Key
to Genera 1 |
| COUPLET 1 |
Leaves scale-like, or if free and pointed, less than 0.5 inches long. |
Leaves needle or blade shapped. |
| COUPLET 2 |
Cones woody, egg-shaped, 2 to 3.5 inches long; cone scales diamond shaped; very large trees found in the Sierra Nevada Mountains of eastern California.
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Not as above.
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| COUPLET 3 |
Female cones berry-like, fleshy with seeds inside; with a whitish bloom.
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Female cones when mature woody, consisting of separate wood scales or plates. (Note immature cones may appear fleshy, but the component pieces can usually be seen).
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| COUPLET 4 |
Female cones elongate consisting of petal-like cone scales. |
Female cones round consisting of polygonal plates.
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| COUPLET 5 |
Scale-like leaves elongate and in whorls; female cones with 6 cone scales; female cones hang downward.
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Scale-like leaves short and stubby, in alternate pairs; female cones with 8 to 12 cone scales; female cones point upward.
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| COUPLET 6 |
Female Cones larger than 0.5 inches in diameter; foliage on plump or angled branchlets.
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Female cones smaller than 0.5 inches in diameter; foliage on flattened branchlets.
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