Willis, K; Wenban-Smith, (2019). Polemonium caeruleum (145.1.1 - 1). Digitised palynological slide. In: European Reference Collection (Version 5, published 10/17/2019). Original material located at Oxford Long-Term Ecology Laboratory. Retrieved from globalpollenproject.org on 2023-09-26.
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Directly sampled from plant materialThe source plant and identification method is unknown. Please contact the curator of this reference collection for more information.