Specimen Information

Cyperus difformis
(smallflower umbrella sedge)
Plants
Exotic
Collection Info
Point Map
Species Profile
Animated Map

Specimen ID1634534
GroupPlants
GenusCyperus
Speciesdifformis
Common Namesmallflower umbrella sedge
StateNY
CountyGreene
LocalityTown of Athens, SE side of Middle Ground Flats
Mapping AccuracyAccurate
HUC8 NameMiddle Hudson
HUC8 Number02020006
HUC10 NameSaw Kill-Hudson River
HUC10 Number0202000611
HUC12 NameMurderers Creek-Hudson River
HUC12 Number020200061101
Map
Collection Day9
Collection Month10
Collection Year2013
Year AccuracyActual
Potential Pathwaydispersed
Statusestablished
Reference 1
Ref. Number:28178
Author:The New York Botanical Garden
Date:2018
Title:William and Lynda Steere Herbarium (NY)
Publisher:SEINet Data Portal
Reference 2
Ref. Number:28331
Author:SEINet Portal Network.
Date:2021
Title:Southwest Environmental Information Network
Publisher:Symbiota Software Project, Arizona State University
CommentsIntertidal marsh with Zizania aquatica, Schoenoplectus pungens, Eleocharis erythropoda, Lindernia dubia, Ludwigia palustris, Bidens connata, Cyperus bipartitus, Persicaria punctata, Heteranthera reniformis, and Bidens tripartita
Record TypeSpecimen
DisposalNY
Museum Cat Number2331536
Freshwater/MarineFreshwater

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. [2025]. Nonindigenous Aquatic Species Database. Gainesville, Florida. Accessed [12/29/2025].

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 general information and questions about the database, contact Wesley Daniel. For problems and technical issues, contact Matthew Neilson.