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Specimen number RSA313405B
Determination Lemna valdiviana
More information: Jepson Online Interchange
Collector, number, date Wayne P. Armstrong, 1169, 1983-9-23
Verbatim date 1983-09-23
County San Luis Obispo
Locality Northeast shore of Oso Flaco Lake
Elevation 5m
HabitatFreshwater marsh plant community.
Coordinates 35.03000 -120.61750 BerkeleyMapper [or without layers, here]
DatumNAD83; ER = 2.0 km
Coordinate sourceTerrain Nav. v. 8.7 (copied from SBBG25525)
Voucher information
other label numbers7a8c3a46-ba0d-402e-8227-33ccb48a0208
verbatim elevation15
NotesHerb. Among Scirpus and Typha thickets; with Wolffia columbiana and scattered Lemna turionifera with small greenish-brown turions.Note: There are a few individuals of Lemna turionifera in this sample. In the fall this species develops small, greenish-brown rootless fronds called turions. The turions contain starch and sink to the bottom during the winter months. This species is unmistakable with its small, dark, roundish turions (see photo). Most of the fronds in this sample are L. valdiviana.The fronds of Lemna valdiviana are typically thin, oblong and one-nerved (generally 2-4 mm long). They often remain attached in colonies of 4-6 (or more). The fronds are thinner and more transparent than L. minuscula. According to Landolt (1980), L. valdiviana is found most commonly in oceanic climates.Lemna minuscula has smaller fronds, generally 1-3 mm long. They are thicker in the middle than L. valdiviana. They usually occur as single individuals or in colonies of two.;

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  2. county=San Luis Obispo; taxon=Lemna valdiviana
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  5. collector=Armstrong; number=1169
  6. collector=Armstrong; number=1169; include nearby numbers
  7. date=1983-09-23; collector=Armstrong
  8. date=1983-09-23; county=San Luis Obispo
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