Diatoms of North AmericaDiatoms of North America
Return to overview

Images of Psammothidium semiapertum

(Hust.) Aboal in Aboal, Alvarez-Cobelas, Cambra and Ector 2003

Type Specimen
Psammothidium semiapertum LM5
  • Slide Number
    ANSP GC112128b
  • Site ID
    ANSP NRSA0151
  • Site Name
    Unnamed Stream, South Dakota
  • Coordinates
    47.280013, -101.177966
  • Caption
    Rapheless valve
  • Scalebar = 10 µm
Psammothidium semiapertum LM4
  • Slide Number
    ANSP GC112128b
  • Site ID
    ANSP NRSA0151
  • Site Name
    Unnamed Stream, South Dakota
  • Coordinates
    47.280013, -101.177966
  • Caption
    Rapheless valve
  • Scalebar = 10 µm
Psammothidium semiapertum LM1
  • Slide Number
    ANSP GC112128b
  • Site ID
    ANSP NRSA0151
  • Site Name
    Unnamed Stream, South Dakota
  • Coordinates
    47.280013, -101.177966
  • Caption
    Raphe valve
  • Scalebar = 10 µm
Psammothidium semiapertum LM3
  • Slide Number
    ANSP GC112128b
  • Site ID
    ANSP NRSA0151
  • Site Name
    Unnamed Stream, South Dakota
  • Coordinates
    47.280013, -101.177966
  • Caption
    Raphe valve
  • Scalebar = 10 µm
Psammothidium semiapertum LM2
  • Slide Number
    ANSP GC112128b
  • Site ID
    ANSP NRSA0151ANSP NRSA0151
  • Site Name
    Unnamed Stream, South Dakota
  • Coordinates
    47.280013, -101.177966
  • Caption
    Rapheless valve
  • Scalebar = 10 µm
Psammothidium semiapertum LM6
  • Slide Number
    ANSP GC112128b
  • Site ID
    ANSP NRSA0151
  • Site Name
    Unnamed Stream, South Dakota
  • Coordinates
    47.280013, -101.177966
  • Caption
    Raphe valve
  • Scalebar = 10 µm
Psammothidium semiapertum SEM3
  • Site ID
    ANSP NRSA0151
  • Name
    Unnamed Stream, South Dakota
  • Coordinates
    47.280013, -101.177966
  • Caption
    Internal view of rapheless valve
  • Scalebar = 2 µm
Psammothidium semiapertum SEM2
  • Site ID
    ANSP NRSA0151
  • Name
    Unnamed Stream, South Dakota
  • Coordinates
    47.280013, -101.177966
  • Caption
    Internal view of raphe valve
  • Scalebar = 2 µm
Psammothidium semiapertum SEM1
  • Site ID
    ANSP NRSA0151
  • Name
    Unnamed Stream, South Dakota
  • Coordinates
    47.280013, -101.177966
  • Caption
    External view of raphe valve
  • Scalebar = 2 µm