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