Literature references
2 literature references:
| Author: | Farjon, A. |
|---|---|
| Year: | 2010 |
| Title: | A Handbook of the World's Conifers |
| Source: | E.J. Brill, Leiden |
| Author: | Eckenwalder, J. |
|---|---|
| Year: | 2009 |
| Title: | Conifers of the world |
| Source: | Timber Press, Portland, Oregon |