Literature references
1 literature reference for Pinus ponderosa var. nigricans (Lemmon) Lemmon:
| Author: | Lemmon |
|---|---|
| Year: | 1889 |
| Title: | – |
| Source: | In: Calif. State Board Forest. Bull. 7: 8. |
1 literature reference for Pinus ponderosa var. nigricans (Lemmon) Lemmon:
| Author: | Lemmon |
|---|---|
| Year: | 1889 |
| Title: | – |
| Source: | In: Calif. State Board Forest. Bull. 7: 8. |