Taxon: Galeopsis tetrahit L.

• Check PlantSearch database of Botanic Gardens Conservation International for possible non-NPGS germplasm.

A declared aquatic or terrestrial noxious weed and/or noxious-weed seed in these U.S. states (see state noxious weed lists), with links to state information or web documents:

AK*°.

ªAquatic.

*Terrestrial.

°In seed.

Link to noxious weed information from

Common names:

• common hemp-nettle   (Source: F BritStace ) – English
  
• hemp-nettle   (Source: Glea Cron ed2 ) – English
  
• galeópse-comum   (Source: D. Groth, p.c. 2005) – Portuguese (Brazil)
  
• pipdån   (Source: Vara kulturvaxt namn ) – Swedish
  

Economic importance:

• Weed: potential seed contaminant   (fide Geigy Weed Tables. 1968)
  

More:

View phytochemical or ethnobotanical data from Duke's Phytochemical and Ethnobotanical Databases

Distributional range:

• EUROPE
  Northern Europe: Denmark; Finland; Ireland; Norway; Sweden; United Kingdom
  Middle Europe: Austria; Belgium; Czechoslovakia; Germany; Hungary; Netherlands; Poland; Switzerland
  East Europe: Belarus; Estonia; Latvia; Lithuania; Russian Federation - European part [w.]; Ukraine
  Southeastern Europe: Albania; Bulgaria; Former Yugoslavia; Greece; Italy; Romania
  Southwestern Europe: France [incl. Corsica]; Portugal; Spain

• naturalized elsewhere

References:

• Aldén, B., S. Ryman & M. Hjertson. 2009. Våra kulturväxters namn - ursprung och användning. Formas, Stockholm (Handbook on Swedish cultivated and utility plants, their names and origin).
• CIBA-GEIGY, Basel, Switzerland. 1974. The CIBA-GEIGY Weed Tables.
• Gleason, H. A. & A. Cronquist. 1991. Manual of vascular plants of northeastern United States and adjacent Canada, ed. 2.
• Greuter, W. et al., eds. 1984–. Med-Checklist.
• Groth, D. 2005. pers. comm. [re. Brazilian common names].
• Kartesz, J. T. 1994. A synonymized checklist of the vascular flora of the United States, Canada, and Greenland. [with two varieties].
• Komarov, V. L. et al., eds. 1934–1964. Flora SSSR.
• Seed Regulatory and Testing Branch, Agricultural Marketing Service, U.S.D.A. 1999. State noxious-weed seed requirements recognized in the administration of the Federal Seed Act.
• Stace, C. 1995. New flora of the British Isles.
• Tutin, T. G. et al., eds. 1964–1980. Flora europaea.

More:

Search AGRICOLA article citation database for citations referencing Galeopsis tetrahit.

Search NCBI's Entrez search engine for PubMed citations referencing Galeopsis tetrahit.

Search Biodiversity Heritage Library for historical publications referencing Galeopsis tetrahit.

Check other web resources for Galeopsis tetrahit L.:

• Flora Europaea: Database of European Plants (ESFEDS)
• ePIC: Electronic Plant Information Centre of Royal Botanic Gardens, Kew
• AGRICOLA: Article Citation Database or NAL Catalog of USDA's National Agricultural Library
• Entrez: NCBI's search engine for PubMed citations, GenBank sequences, etc.

Images:

• Forestry Images: from www.forestryimages.org
• Seed: U.S. National Seed Herbarium image
• Seeds or fruits: Seed ID Workshop image, from Department of Horticulture and Crop Science, Ohio State University

More:

• Check PlantSystematics.org for additional images
• Images Note: Be advised that their identity may be inaccurate. Proper identification of a plant may require specialized taxonomic knowledge or comparison with properly documented herbarium material.

Abbreviations & symbols in GRIN Taxonomy

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