Fraxinus pennsylvanica

Genus-level evidence

1 claim where the source named the organism only at the genus or collective level (e.g. Fraxinus sp.) and did not determine the species. Listed separately because they apply to the genus, not specifically to Fraxinus pennsylvanica.

• pathogen pressure · ash yellows phytoplasma → Fraxinus spp. · effect: harmful

  “Declining ash yellows-affected tree with witches'-broom-like rosettes”

  Unknown (Unknown) · History of Plant Pathology and Early Significant Plant Diseases (Chapter 1 Introduction) · p. 698 #6494560