Navicula subrostellata

Hustedt 1955      Category: Symmetrical biraphid
BASIONYM: Navicula subrostellata Hustedt 1955

REPORTED AS: Navicula secreta var. apiculata (Patrick 1959) | Navicula ammophila (Witkowski et al. 2000) 

Navicula subrhynchocephala

 

Navicula supleeorum

LM scalebar = 10 µm = 80 pixels.



Observations

Contributor: Marina Potapova - October 2011
Length Range: 27-31 µm
Width Range: 6.0-6.8 µm
Striae in 10 µm: 14-16

Description

Valves are lanceolate to linear-lanceolate with protracted apices. The axial area is narrow and straight. The central area is round. External proximal raphe ends are straight and close to each other. Striae are straight and slightly radiate around the center, becoming parallel, then convergent at the apices. The areolae are clearly visible under LM, 23-26 in 10 μm.



Original Description

Basionym: Navicula subrostellata
Author: Hustedt 1955
Length Range: 30 µm
Width Range: 6 µm
Striae in 10 µm: 15

Original Description

Valves linear with parallel margins and strongly rostate acute ends, about 30 μ long, 6 μ broad. Raphe straight, threadlike, with approximate central pores; axial area very narrow; central area small, elongate-elliptical. Transapical striae slightly radiate, slightly convergent at the ends, about 15 in 10 μ, rather coarsely lineate, lineolae about 24 in 10 μ.

Original Images


Cite This Page:
Potapova, M. (2011). Navicula subrostellata. In Diatoms of the United States. Retrieved July 31, 2014, from http://westerndiatoms.colorado.edu/taxa/species/navicula_subrostellata

Species: Navicula subrostellata

Contributor: Marina Potapova

Reviewer: Sam Rushforth

Citations

Hustedt, F. (1955). Marine littoral diatoms of Beaufort, North Carolina. Marine Station Bulletin 6:67 pp., 16 pls.

Patrick, R.M. (1959). New species and nomenclatural changes in the genus Navicula (Bacillariophyceae). Proceedings of the Academy of Natural Sciences of Philadelphia 111 (1959): 91-108 . http://www.jstor.org/stable/4064508

Witkowski, A., Lange-Bertalot, H. and Metzeltin, D. (2000). Diatom Flora of Marine Coasts I. Iconographia Diatomologica 7: 1-925.

Links & ID's

Index Nominum Algarum (INA)

Original INA

California Academy of Sciences (CAS)

Navicula subrostellata CAS

North American Diatom Ecological Database (NADED)

NADED ID:

Autecology Discussion

Brackish water; in inland waters of high ionic content, estuaries, and in coastal habitats