Specimen Information

Landoltia punctata
Landoltia punctata
(dotted duckweed)
Plants
Exotic

Specimen ID230876
GroupPlants
GenusLandoltia
Speciespunctata
Common Namedotted duckweed
StateCA
CountySan Diego
LocalityN. Twin Oaks, Valley, pond e. side N. Twin Oaks Valley Rd, 2.4 km n. of junction w/ Hwy. S-12
Mapping AccuracyApproximate
HUC8 NameSan Luis Rey-Escondido
HUC8 Number18070303
Map
+
Collection Day4
Collection Month7
Collection Year1983
Year AccuracyActual
Potential Pathwayunknown
Statusestablished
Reference 1
Ref. Number:10646
Author:Armstron, W.P.
Date:1984
Title:Noteworthy Collections, California, Spirodela punctata.
Journal:Madrono
Volume:31
Issue:2
Pages:123-124
Commentsearliest record southern CA, se. range extension of 470 km from San Joaquin River site. associates:Lemna, Wolffia and Azolla. infestation size: 1.5 ha. id: 2 or 3 roots, small ventral scale covering base of roots, brown pigment cells (dead fronds) CollectorNumber: Armstrong 1145 RSA and SD
Record TypeLiterature
Museum Cat Numberherb/RSA and SD
Freshwater/MarineFreshwater


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Citation information: U.S. Geological Survey. [2022]. Nonindigenous Aquatic Species Database. Gainesville, Florida. Accessed [5/18/2022].

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