(Lange-Bertalot & Sabater) Lange-Bertalot & Sabater in Rumrich et al. 2000 Category: Symmetrical biraphid
BASIONYM: Navicula longicephala var. vilaplanii Lange-Bertalot et Sabater in Sabater et al. 1990
Contributor: Marina Potapova - October 2011
Length Range: 12-16 µm
Width Range: 2.5-3.3 µm
Striae in 10 µm: 20-24
Valves are linear-lanceolate with very slightly protracted apices. The axial area is narrow and straight. The central area is small. The raphe is straight, with close proximal ends. Striae are strongly radiate around the center, becoming convergent at the apices. The areolae are indistinguishable under LM, approximately 50 in 10 μm.
Basionym: Navicula longicephala var. vilaplanii
Author: Lange-Bertalot et Sabater in Sabater et al. 1990
Length Range: µm
Striae in 10 µm:
Valves narrow, linear lanceolate, apices rounded to subcapitate, length of 14-17 µm, 2.5-3.3 µm width. Raphe straight and filiform, bent at the end, axial area narrow and linear, central area rounded, transapical striae radial in the center, highly convergent in the poles, 19-22 in 10 µm. Striae made up by 6-8 areolae/µm (in S.E.M.).
Rumrich, U., Lange-Bertalot, H. and Rumrich, M. (2000). Diatoms of the Andes. From Venezuela to Patagonia/Tierra del Fuego and two additional contributions. Lange-Bertalot, H. (ed.), Iconographia Diatomologica. Annotated Diatom Micrographs. Vol. 9. Phytogeography-Diversity-Taxonomy. Koeltz Scientific Books, Königstein, Germany, 9:673 pp.
Sabater, S., Tomàs, X., Cambra, J. and Lange-Bertalot, H. (1990). Diatom flora of the Cape of Creus Peninsula, Catalonia, N.E. of Spain. Nova Hedwigia 51(1-2):165-195.