• Category
  • Length Range
    6.5-15.0 µm
  • Width Range
    2.7-3.6 µm
  • Striae in 10 µm



Valves are linear-elliptical-lanceolate with rounded slightly drawn-out ends.ends. Axial area is narrowly linear. Central area is elliptical or round, usually asymmetrically expanded to one side of the valve. Striae are radiate in the middle, slightly convergent at apices, 35-40 in 10 μm. Areolae transersely ellitpical, covered by external hymens, approximately 45 in 10 mm. Raphe is filiform, straight or very slightly curved, with slightly expanded external proximal endings.


Original Description

Schalen linear-elliptisch mit schwach konvexen Seiten und breit gerundeten Enden, 10-16 μm lang, 3-4 μm breit. Raphe gerade bis leicht gebogen, fadenförmig. Polspalten fast rechtwinklig nach derselben Seite abgebogen, Zentralporen ziemlich weit vonein-ander entfernt. Axialarea eng linear, Zentralarea groβ, rundlich, einseitig bis an den Rand reichend. Transapikalstreifen in der Mitte radial, an den Enden schwach konvergent, 35-40 in 10 μm, punktiert, ca. 50 Poroide in 10 μm, in unregelmäβigen, welligen Längsreihen

  • Basionym
    Navicula vitiosa
  • Author
    Schim. 1978
  • Length Range
    10-16 µm
  • Width
    3-4 µm
  • Striae in 10µm

Original Images

Nuvitiosa  Orig Ill
Orig Descr  Nupela Vitiosa

Cite This Page

Potapova, M. (2010). Nupela vitiosa. In Diatoms of North America. Retrieved August 20, 2018, from https://diatoms.org/species/nupela_vitiosa


The 15 response plots show an environmental variable (x axis) against the relative abundance (y axis) of Nupela vitiosa from all the stream reaches where it was present. Note that the relative abundance scale is the same on each plot. Explanation of each environmental variable and units are as follows:

ELEVATION = stream reach elevation (meters)
STRAHLER = distribution plot of the Strahler Stream Order
SLOPE = stream reach gradient (degrees)
W1_HALL = an index that is a measure of streamside (riparian) human activity that ranges from 0 - 10, with a value of 0 indicating of minimal disturbance to a value of 10 indicating severe disturbance.
PHSTVL = pH measured in a sealed syringe sample (pH units)
log_COND = log concentration of specific conductivity (µS/cm)
log_PTL = log concentration of total phosphorus (µg/L)
log_NO3 = log concentration of nitrate (µeq/L)
log_DOC = log concentration of dissolved organic carbon (mg/L)
log_SIO2 = log concentration of silicon (mg/L)
log_NA = log concentration of sodium (µeq/L)
log_HCO3 = log concentration of the bicarbonate ion (µeq/L)
EMBED = percent of the stream substrate that is embedded by sand and fine sediment
log_TURBIDITY = log of turbidity, a measure of cloudiness of water, in nephelometric turbidity units (NTU).
DISTOT = an index of total human disturbance in the watershed that ranges from 1 - 100, with a value of 0 indicating of minimal disturbance to a value of 100 indicating severe disturbance.