Specimen Information

Didymosphenia geminata
Didymosphenia geminata
(didymo)
Algae
Cryptogenic

Specimen ID1680173
GroupAlgae
GenusDidymosphenia
Speciesgeminata
Common Namedidymo
StateOR
CountyLinn
LocalityHackleman Creek, between Echo and Slide Creeks
Mapping AccuracyAccurate
HUC8 NameMckenzie
HUC8 Number17090004
HUC10 NameHeadwaters McKenzie River
HUC10 Number1709000402
HUC12 NameHackleman Creek-McKenzie River
HUC12 Number170900040202
Map

NAS ARM

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Collection Day9
Collection Month8
Collection Year2021
Year AccuracyActual
Potential Pathwayhitch hiker
Statusunknown
CommentsForest Service stream surveying crew was surveying upstream a 360m stream reach (starting at GPS point provided). From Sam Chan the person who confirmed ID... Based on the feel test and microscopy, dumb bell like cell, the sample presented meets the ID characteristics for Didymosphenia germinata. I [Sam] typically assume that samples are likely the common native diatom Cymbella mexicana, but (even though the sample was rather decomposed) the sample is highly characteristic of Didymo.
Record TypeNAS sighting report
Earliest Recordstate
VerifierSam Chan, Oregon Sea Grant
Freshwater/MarineFreshwater
Number Collected1
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. [2022]. Nonindigenous Aquatic Species Database. Gainesville, Florida. Accessed [1/19/2022].

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