Links for Marrubium vulgare, horehound
Databases
Search for Marrubium vulgare in the Global Biodiversity Information Facility (GBIF).
Search for Marrubium vulgare in the Encyclopedia of Life (EOL).
Search for known associations between Marrubium vulgare and plants in the Plant-SyNZ database.
Search for Marrubium vulgare in the Species 2000 & ITIS Catalogue of Life.
Taxonomy
Check the taxonomy of Marrubium vulgare in the Universal Biological Indexer and Organizer (uBio).
Scientific literature
Search the internet for scholarly articles about Marrubium vulgare using Google Scholar.
Images
Search for images of Marrubium vulgare on the internet using Google Images.