Specimen Information

Trapa bispinosa var. iinumai
Trapa bispinosa var. iinumai
(water chestnut)
Plants
Exotic

Specimen ID1670514
GroupPlants
GenusTrapa
Speciesbispinosa
Varietyiinumai
Common Namewater chestnut
StateVA
CountyLoudoun
LocalityMount Pleasant Farm pond [site code MPF-VA]
Mapping AccuracyAccurate
HUC8 NameMiddle Potomac-Catoctin
HUC8 Number02070008
HUC10 NameLower Goose Creek
HUC10 Number0207000807
HUC12 NameLittle River
HUC12 Number020700080701
Map

NAS ARM

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Collection Day15
Collection Month7
Collection Year2020
Year AccuracyActual
Potential Pathwayhitch hiker on waterfowl
Statusestablished
CommentsInitial year 2020. The property owner participated in a 2018 Virginia Tech Extension Watershed Stewards pond management advice program. As part of the program, a Steward visited the pond during the growing season (May to early November 2018) and identified all weeds present in the water, and Trapa was not seen. In October 2021, the owner responded to a general inquiry to say that Trapa had appeared in their pond 15 months ago and they have been pulling it ever since. Nancy Rybicki visited the pond on 11/16/2021 and confirmed the species.
Record TypeNAS sighting report
Earliest Recordcounty
VerifierNancy Rybicki
Freshwater/MarineFreshwater
Photo





Disclaimer:

The data represented on this site vary in accuracy, scale, completeness, extent of coverage and origin. It is the user's responsibility to use these data consistent with their intended purpose and within stated limitations. We highly recommend reviewing metadata files prior to interpreting these data.

Citation information: U.S. Geological Survey. [2021]. Nonindigenous Aquatic Species Database. Gainesville, Florida. Accessed [12/5/2021].

Contact us if you are using data from this site for a publication to make sure the data are being used appropriately and for potential co-authorship if warranted. For queries involving fish, please contact Matthew Neilson. For queries involving invertebrates, contact Amy Benson.