Polemonium coeruleum
- Citations total:
- 2
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| original | Late Pliocene | W.Germany(Niedersachsen) | Chanda,S. Investigations of the Pliocene and Pleistocene flora and vegetational history of the Leine Valley and the southwestern foothills of the Harz Mountains, (Untereichsfeld). | 1962 | |
| details | Middle Pliocene | USSR(Tatar ASSR) | Ananova,E.N. A Middle Pliocene flora in the Region of the Kama River | 1963 |