Literature references
1 literature reference for Hieracium nigrescens subsp. frondiferum (Elfstr.) Zahn:
| Author: | Zahn |
|---|---|
| Year: | 1921 |
| Title: | – |
| Source: | In: Engl., Pflanzenr. IV.280 (Heft 77): 650 |
1 literature reference for Hieracium nigrescens subsp. frondiferum (Elfstr.) Zahn:
| Author: | Zahn |
|---|---|
| Year: | 1921 |
| Title: | – |
| Source: | In: Engl., Pflanzenr. IV.280 (Heft 77): 650 |