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Galeopsis tetrahit L.
brittlestem hempnettle
Symbol: GATE2
Group: Dicot
Family: Lamiaceae
Growth Habit: Forb/herb
Duration: Annual
U.S. Nativity: Introduced
Click on the image below to enlarge it and download a high-resolution TIFF file.
Click on this Line drawing of Galeopsis tetrahit (brittlestem hempnettle) to enlarge it and download a high-resolution TIFF file Britton, N.L., and A. Brown. 1913. Illustrated flora of the northern states and Canada. Vol. 3: 119. Courtesy of Kentucky Native Plant Society. Scanned by Omnitek Inc. Usage Guidelines.

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More Information
About brittlestem hempnettle

Link to plant Classification report for Galeopsis tetrahit

Plant source and reference for Galeopsis tetrahit

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State Distributional Map for GATE2
© Image generated using gd 1.8
Plant Distribution by State

Galeopsis tetrahit L.

GATE2

See county distributions for the following states by clicking on them below or on the map.

CT IL ME
MA MI MO
NH ND RI
SD TN* VT
WV WI*
* Offsite source.
Connecticut
Idaho
Illinois
Iowa
Louisiana
Maine
Maryland
Massachusetts
Michigan
Minnesota
Missouri
Montana
New Hampshire
New Jersey
New York
North Dakota
Ohio
Oregon
Pennsylvania
Rhode Island
South Dakota
Vermont
Washington
West Virginia
Wisconsin

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Maine distribution information Massachusetts distribution information South Dakota distribution information Michigan distribution information New Hampshire distribution information Illinois distribution information West Virginia distribution information Wisconsin distribution information linked offsite at University of Wisconsin Madison North Dakota distribution information Missouri distribution information Vermont distribution information Connecticut distribution information Tennessee distribution information linked offsite at Univerity of Tennessee Herbarium Rhode Island distribution information
Related Taxa:
Galeopsis tetrahit L.

View 77 genera in Lamiaceae, 4 species in Galeopsis

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Classification:
Galeopsis tetrahit L.

Click on a scientific name below to expand it in the PLANTS Classification Report.
   
    Kingdom Plantae – Plants
       Subkingdom Tracheobionta – Vascular plants
          Superdivision Spermatophyta – Seed plants
             Division Magnoliophyta – Flowering plants
                Class Magnoliopsida – Dicotyledons
                   Subclass Asteridae –
                      Order Lamiales –
                         Family Lamiaceae – Mint family
                            Genus Galeopsis L. – hempnettle
                               Species Galeopsis tetrahit L. – brittlestem hempnettle

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Noxious Weed Information:
Galeopsis tetrahit L.
This plant is listed by the U. S. federal government or a state. Common names are from state and federal lists. Click on a place name to get a complete noxious weed list for that location.
Alaska:
        hempnettle     Noxious weed

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Invasive Information:
Galeopsis tetrahit L.
        hempnettle
This plant is considered invasive by the authoritative sources noted below. This plant may be known by one or more common names in different places, and some are listed above. Click on an acronym to view each invasive plant list, or click here for a composite list of Invasive Plants of the U.S.
STATE   Assorted authors. 200_. State Noxious Weed Lists for 43 States. State agriculture or natural resource departments.
 

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Introduced Information:
Galeopsis tetrahit L.
This plant is introduced to the United States from another country or countries. Click on link below for a partial or complete list of U.S. introduced plants.

List of Invasive PlantsScientific Name = A| B| C| D| E| F| G| H| I| J| K| L| M| N| O| P| Q| R| S| T| U| V| W| X| Y| Z| all
List of Invasive PlantsCommon Name = A| B| C| D| E| F| G| H| I| J| K| L| M| N| O| P| Q| R| S| T| U| V| W| X| Y| Z| all
Note: The complete introduced plant report is 1.4 MB. Download and display times may take 3 to 12 minutes depending on your internet connection, internet traffic, your computer and browser. It may appear your computer has locked up. Task manager may report that Netscape is 'Not Responding'. Typically, Netscape is formatting the report for display, and if you are patient, the final report will appear.

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Other Species Accounts and Images:
Galeopsis tetrahit L.

View species account from ARS Germplasm Resources Information Network (GRIN).
View taxonomic account from Integrated Taxonomic Information System (ITIS) for ITIS Taxonomic Serial Number 32499.
View photographs from University of Tennessee Herbarium.
View species account or photographs from Wisconsin State Herbarium (UW-Madison).

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Related Web Sites:
Galeopsis tetrahit L.

    British Columbia Ag. & Food, Crop Protection Program
    Manitoba Agriculture - Weeds in Crop Production: abstract & images
    Saskatchewan Agriculture and Food: weed identification
    WeedScience.com: diagnostic images

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