Chara subcylindrica Reid & Groves, 1921

Trabelsi, Khaled, Sames, Benjamin, Wagreich, Michael, K ́ azm ́, Miklos, , Andrea Mindszen & Mart ́ ın-Clo, d Carles, 2021, A new diverse charophyte flora and biozonation of the Eocene bauxite cover-sequence at G ant (V ertes Hills, Hungary), Journal of Systematic Palaeontology 19 (7), pp. 541-563 : 554

Chara subcylindrica Reid & Groves, 1921

( Fig. 14J–O)

1921 Chara subcylindrica Reid & Groves : 187, pl. 5, figs 4, 5.

1959 Grambastichara subcylindrica Horn af Rantzien: 76, pl. 3, figs 5–7.

1986 Chara cf. subcylindrica Riveline : 67, pl. 30, figs 5–8.

Material. Up to 250 gyrogonites in sample G-6b. Collection numbers of figured specimens: HNHM-PBO 1586–1591.

Description. Medium-sized gyrogonites (500–750 M m high and 200–400 M m wide) ellipsoidal prolate to perprolate ( ISI 130–200) in shape, laterally showing 8–11 (usually 9–10) convolutions ( Figs 14J–M, 16). Maximum width at the equator. Apex rounded with widening of the spiral cell endings ( Fig. 14N). Spiral cells often slightly concave to flat, separated by narrow intercellular ridges, cells non-ornamented and without any periapical modification. Base regularly tapering to round, showing a superficial pentagonal basal pore ( Fig. 14O).

Distribution. This is the first report of Chara subcylindrica in Hungary. According to Reid & Groves (1921) and Riveline (1986), this species occurs in the upper Bartonian–lower Oligocene of England, France, Belgium and Germany.