| Author: | Clausen, C. P. |
| Year: | 1933 |
| Journal: | — |
| Publisher: | United States Department of Agriculture, Washington D.C., Circular 266. |
| Volume: | |
| Issue: | |
| Pagination: | 15–17 [or 25–30] |
| Language: | English |
| URL: |
| Species | Status | Original Combination | Citation |
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