Info

Measured with TEM, except those on the bands of Rhizosolenia castracanei and on the valves of R. temperi.

Rhizosolenia acuminata (H. Peragallo) H. Peragallo in H. 8c M. Peragallo (Plate 29, Table 34)

Basionym: Rhizosolenia temperei var. acuminata H. Peragallo. References: Peragallo, 1892, p. 110, Plate 2, Fig. 4; H. 8C M. Peragallo, 1897-1908, p. 463, Plate 123, Figs. 7 and 8; Hustedt, 1930, p. 605, Fig. 350; Cupp, 1943, p. 94, Fig. 53; SundstrOm, 1986, p. 69, Figs. 31 and 165-176.

Valve and valvocopula deeply conical; distal part usually slightly narrowed. No otaria.

PLATE 28 Rhizosolenia crassa: epitheca in ventral view, hypotheca in lateral view. Scale bar = 100 p.m. Rhizosolenia clevei var. clevei: part of theca with many rows of segments. Scale bar = 100 p.m. Rhizosolenia clevei var. communis: part of theca with two columns of segments. Scale bar = 20 fim. Rhizosolenia hyalina: parts of thecae in ventral and lateral view. Scale bar = 20 /um. Rhizosolenia castracanei var. neglecta: two dorsiventral columns of segments. Scale bar = 20 p.m. Rhizosolenia castracanei var. castracanei: many columns of segments. Scale bar = 100 ixm. Rhizosolenia debyana: upper partial theca in ventral and lower part in dorsal view. Scale bar = 100 p.m. All figures after Sundström (1986).

a -b ft acuminata

R. ostenfeldii a -b ft acuminata a -b ft striata k

Was this article helpful?

0 0

Post a comment