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Specimen number RSA309353
Determination Lemna minuta
More information: Jepson Online Interchange
Collector, number, date Wayne P. Armstrong, 1141, 1983-6-3
Verbatim date 1983-06-03
County San Luis Obispo
Locality Black Lake Canyon-- marsh on east side of Highway 1, 3.1 miles south of junction with Valley Road in Arroyo Grande
Elevation 9m
HabitatFreshwater marsh plant community.
Coordinates 35.05840 -120.59500 BerkeleyMapper [or without layers, here]
DatumWGS84; ER = 500 m
Coordinate sourceGoogle Earth
Voucher information
other label numbers7861ab50-0338-4841-8fbd-709b6adf5cdc
verbatim elevation30
NotesHerb. With Azolla filiculoides, Wolffiella lingulata, W. oblonga, Hydrocotyle ranunculoides, and Nuphar polysepalum.Note: Most of the specimens in this collection appear to be Lemna minuscula. They are generally at the maximum size range for L. minuscula (3-4 mm) and generally adhere in groups of 4 rather than the usual 2-- but nonetheless I still believe they are L. minuscula and not L. valdiviana. When grown in buckets at my home in San Diego Co. they tend to assume the more typical size and doublet growth form of L. minuscula.E. Landolt (Geobotanical Institute, Zurich) has reported L. valdiviana from Oso Flaco Lake-- in addition to L. minuscula and L. turionifera.Photo shows several fronds of Lemna minuscula with small fronds of Wolffia columbiana.;

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  2. county=San Luis Obispo; taxon=Lemna minuta
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  4. collector=Armstrong; taxon=Lemna minuta
  5. collector=Armstrong; number=1141
  6. collector=Armstrong; number=1141; include nearby numbers
  7. date=1983-06-03; collector=Armstrong
  8. date=1983-06-03; county=San Luis Obispo
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