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Specimen number RSA307390
Determination Spirodela punctata
More information: Jepson Online Interchange
Collector, number, date Wayne P. Armstrong, 1145, 1983-7-4
Verbatim date 1983-07-04
County San Diego
Locality North Twin Oaks Valley Road -- 2.4 kilometers N of junction with Highway S-12.
Elevation 244m
HabitatFreshwater Marsh.
Coordinates 33.20000 -117.16666 BerkeleyMapper [or without layers, here]
Datumnot recorded
Coordinate sourceNot recorded
Voucher information
other label numbersf85ef7c3-af1f-4ea4-ab83-10e19d602612
verbatim elevation800
Annotations and/or
curatorial actions
Spirodela punctata, Wayne P. Armstrong 1983-06-04
NotesPond on E side of road. Herb. Forming dense colonies at surface of large pond covering at least 0.8 ha, associated with Lemna minuscula and Lemna gibba with combined density of 12-18 per cm [squared] of water surface. Forming dense masses with Lemna gibba and Lemna minuscula; Distinguished from Lemna by its multiple roots (2-3) and purplish ventral side.;

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