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Diatoms of North America
Practitioners
Morphology
Centric
Araphid
Eunotioid
Symmetric Biraphid
Monoraphid
Asymmetric Biraphid
Epithemioid
Nitzschioid
Surirelloid
Genera
Species
Glossary
About Us
News
Projects
Review Board
Taxon Contributors
Contact Us
What are diatoms?
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Images of
Planothidium
frequentissimum
(Lange-Bert. in Krammer and Lange-Bert.) Lange-Bert. 1999
Type Specimen
Slide Number
ANSP GC106527b
Site ID
ANSP GS119780
Site Name
BLACK CANYON CREEK NEAR SUNNYSIDE, WA
Coordinates
46.289, -119.978
Caption
Girdle view
Scalebar = 10 µm
Slide Number
ANSP GC109838b
Site ID
ANSP MO000465
Site Name
Mill Creek, MT
Coordinates
46.6607, -110.5608
Caption
Raphe valve
Scalebar = 10 µm
Slide Number
ANSP GC109838b
Site ID
ANSP MO000465
Site Name
Mill Creek, MT
Coordinates
46.6607, -110.5608
Caption
Rapheless valve
Scalebar = 10 µm
Slide Number
ANSP GC109392b
Site ID
ANSP MO000019
Site Name
Wise River, MT
Coordinates
45.542, -113.0829
Caption
Raphe valve
Scalebar = 10 µm
Slide Number
ANSP GC109838b
Site ID
ANSP MO000465
Site Name
Mill Creek, MT
Coordinates
46.6607, -110.5608
Caption
Rapheless valve
Scalebar = 10 µm
Slide Number
ANSP GC111921b
Site ID
ANSP GS181995
Site Name
MORAN CREEK NEAR STAPLES, MN
Coordinates
46.2528, -94.8417
Caption
Rapheless valve
Scalebar = 10 µm
Slide Number
ANSP GC109392b
Site ID
ANSP MO000019
Site Name
Wise River, MT
Coordinates
45.542, -113.0829
Caption
Rapheless valve
Scalebar = 10 µm
Site ID
ANSP NCPA0206
Name
Stony Lick Run, PA
Coordinates
41.6156, -77.8798
Caption
External view of raphe valve
Scalebar = 2 µm
Site ID
ANSP NCPA0173
Name
Calhoun Branch of Trout Run, PA
Coordinates
41.4512, -77.9477
Caption
External valve of a frustule
Scalebar = 2 µm
Site ID
MO000373
Name
Johnson Creek, MT
Coordinates
45.7067, -113.6042
Caption
Internal view of rapheless valve
Scalebar = 2 µm