Nupela poconoensis

(R.M.Patrick) Potapova 2011      Category: Symmetrical biraphid
BASIONYM: Navicula poconoensis R.M.Patrick 1945

Nupela pennsylvanica


Nupela potapovae

LM scalebar = 10 µm = 80 pixels.


Contributor: Marina Potapova - October 2010
Length Range: 17-28 µm
Width Range: 4.9-5.6 µm
Striae in 10 µm: 27-31


Valves are lanceolate with convex margins and subrostrate ends. Striae are slightly radiate throughout the valve, parallel or slightly convergent at the apices, 27-31 in 10 μm. The raphe is absent on one valve. The raphe valve has a narrowly lanceolate axial area and rounded central area expanded to the valve margin on one or both sides. The raphe is almost straight; externally it lies in a shallow furrow. Externally the raphe slits gradually expand towards the center of the valve. The axial area of the rapheless valve is lanceolate and covered by siliceous thickenings.

Original Description

Basionym: Navicula poconoensis
Author: R.M.Patrick 1945
Length Range: 26.4 µm
Width Range: 4.6 µm
Striae in 10 µm: 31

Original Description

Valvae linearis-lanceolatae 26.4 μ longae, 4.6 μ latae, apicibus late rostratis; area axiali lanceolata, area centrali rotundata; striis 31 in 10 m, in apicibus parallelis.

Original Images

Cite This Page:
Potapova, M. (2010). Nupela poconoensis. In Diatoms of the United States. Retrieved April 19, 2018, from

Species: Nupela poconoensis

Contributor: Marina Potapova

Reviewer: Sarah Spaulding


Patrick, R.M. (1945). A taxonomic and ecological study of some diatoms from the Pocono Plateau and adjacent regions. Farlowia 2(2):143-221.

Potapova, M. (2011). New species and combinations in the genus Nupela from the USA. Diatom Research. 10.1080/0269249X.2011.575111

Links & ID's

Index Nominum Algarum (INA)

California Academy of Sciences (CAS)

North American Diatom Ecological Database (NADED)


Autecology Discussion