Specimen Information

Potamogeton crispus × pusillus
(hybrid curly-leaved pondweed)
Native Hybrid

Specimen ID1703137
Speciescrispus × pusillus
Common Namehybrid curly-leaved pondweed
CountyContra Costa
LocalityFranks Tract State Recreation Area
Mapping AccuracyAccurate
HUC8 NameSan Joaquin Delta
HUC8 Number18040003
HUC10 NameMiddle River-San Joaquin River
HUC10 Number1804000309
HUC12 NameMiddle River-San Joaquin River
HUC12 Number180400030906
Collection Day3
Collection Month10
Collection Year2018
Year AccuracyActual
Potential Pathwayhybridized
Reference 1
Ref. Number:39368
Author:Jones, A.R., and R.A. Thum
Title:Molecular confirmation of hybridization with invasive curly-leaf pondweed (Potamogeton crispus) in the Sacramento–San Joaquin Delta, California
Journal:Journal of Aquatic Plant Management
CommentsFirst documented hybridization event between non-native Potamogeton crispus and native P. pusillus.
Record TypeLiterature
Earliest Recordnation
VerifierRyan A. Thum
Specimen ImpactHybridization


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Citation information: U.S. Geological Survey. [2024]. Nonindigenous Aquatic Species Database. Gainesville, Florida. Accessed [5/26/2024].

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