• Category
  • Length Range
    11.5-15.5 µm
  • Width Range
    3.6-3.8 µm
  • Striae in 10 µm
  • Reported As
    Navicula perminuta (ANSP Image Database, Image Codes IM001978, IM005678)
    Hippodonta pumula (Metzeltin et al. 2009, Pl. 63, Figs. 21-22, Pl. 255.Fig. 9)



Valves are small and rhombic to rhombic-lanceolate, with rounded apices. Striae are weakly radiate at mid-valve, becoming parallel, even weakly convergent near the apices. The axial area is narrow and the raphe is filiform. The central area is bow tie-shaped with two shortened striae, one on either side. A distinct hyaline area is found at both apices. Areolae are not visible in LM.


Original Description

  • Basionym
    Navicula pseudacceptata
  • Author
    Kobayasi in Kobayasi and Mayama 1986
  • Length Range
    6-15 µm
  • Width
    4-5 µm
  • Striae in 10µm
    16 in the center valve, 18 at the ends

Original Images

Hip Pseudacceptata Orig Desc Plate
Hip Pseudacceptata Orig Desc Text

Cite This Page

Bishop, I. (2015). Hippodonta pseudacceptata. In Diatoms of North America. Retrieved May 30, 2024, from https://diatoms.org/species/hippodonta_pseudacceptata


The 15 response plots show an environmental variable (x axis) against the relative abundance (y axis) of Hippodonta pseudacceptata 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.