Authors: Walter B. McDougall & H. S. Haskell
Citation: McDougall & Haskell 1959 Typical Seeds Plants of the Ponderosa Pine Zone Plateau 32, 1-62
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Families: 57
Genera: 201
Species: 255 (species rank)
Total Taxa: 291 (including subsp. and var.)
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This project made possible by National Science Foundation Award 1410069