(Grunow ex Cleve) Ross 1963 Category: Symmetrical biraphid
BASIONYM: Schizostauron crucicula Grunow ex Cleve 1881
Contributor: Marina Potapova - October 2011
Length Range: 20-35 µm
Width Range: 7.2-9.3 µm
Striae in 10 µm: 22-24
Valves are elliptical-lanceolate with rostrate to subcapitate apices. Pseudosepta are present at the ends. The axial area is narrow and linear. A distinctive stauros is present, forming the shape of an “X”. The raphe is straight and the proximal external ends are turned to the primary side. Striae are radiate. Areolae are small, circular and number approximately 40 in 10 μm.
Basionym: Schizostauron crucicula
Author: Grunow ex Cleve 1881
Length Range: µm
Striae in 10 µm:
Schizostauron Crucicula GRUN. Striæ oblique, fine, 25 in 0,01 mm. Stauros bifid with very divergent branches, reaching the margins. Length 0,03mm. Breadth 0,009 mm. Pl. III, fig. 44, 1000/1. Merrimac River U.St. on Chara, very rare in a gathering sent by Mr. O. NORDSTEDT. 1)
Cleve, P.T. (1881). On some new and little known diatoms. Kongliga Svenska-Vetenskaps Akademiens Handlingar 18(5):1-28.
Ross, R. (1963). The diatom genus Capartogramma and the identity of Shizostauron. Bulletin of the British Museum (Natural History) Botany 3: 49-92.