Literature references
2 literature references:
| Author: | Krüssmann, G. |
|---|---|
| Year: | 1983 |
| Title: | Handbuch der Nadelgehölze, 2. Auflage |
| Source: | Paul Parey, Berlin & Hamburg |
| Author: | Wrobel, M. & Creber, G. |
|---|---|
| Year: | 1996 |
| Title: | Elsevier's dictionary of plant names |
| Source: | Elsevier, Amsterdam |