Distribution map
Molecular data
Online Plant Databases
Quercus nigra on EFLORAS
Quercus nigra on Encyclopedia of Life
Quercus nigra on ePIC RBG Kew
Quercus nigra on GBIF
Quercus nigra on IPNI
Quercus nigra on The Plant List
Quercus nigra in the online Kew Herbarium Catalogue
Quercus nigra in the online MNHN Paris Herbarium Catalogue
Quercus nigra in the online Naturalis Leiden Herbarium Catalogue
Quercus nigra on Tropicos
Quercus nigra on Wikispecies
Quercus nigra on JSTOR Global Plants
Quercus nigra on EUROPEANA Collections
Scanned TYPES
TYPES of Quercus nigra on JSTOR Global Plants
TYPES of Quercus nigra on Kew Herbarium Catalogue
TYPES of Quercus nigra on MNHN Paris
Search for TYPES of Quercus nigra in the online Naturalis Leiden Herbarium Catalogue
Images
Quercus nigra on Google Image Search
Online libraries
Quercus nigra in Biodiversity Heritage Library
Search for Quercus nigra on Botanicus.org
Scientific literature (ongoing)