Cosmarium cf. subspeciosum var. validius Nordstedt

Adam, Chaidir, Kenins, Alex & Prabowo, Danang A., 2025, Diversity and new records of desmids (Zygnematophyceae, Charophyta) in Central Kalimantan, Indonesia, Phytotaxa 691 (2), pp. 125-150 : 136

Cosmarium cf. subspeciosum var. validius Nordstedt

Croasdale & Flint 1988, p. 106, pl. 49, figs 11&12.

Fig. 4m

Comments: Observations of the cell wall sculpturing on the face of the semicells are required to confirm our designation.

Distribution: Cosmopolitan.

Figures

FIGURE 4. Cosmarium: (a) C. angulosum Brébisson, (b) C. cf. bioculatum Brébisson ex Ralfs, (c) C. difficile var. dilatatum O.Borge, (d) C. geminatum f. ornatum Behre 1956, (e) C. granatum Brébisson ex Ralfs, (f) C. margaritatum var. quadrum Willi Krieger, (g) C. obsoletum (Hantzsch) Reinsch, (h) C. cf. obtusatum (Schmidle) Schmidle, (i) C. pseudopyramidatum P.Lundell, (j) C. regnellii Wille, (k) C. striolatum (Nägeli) W.Archer, (l) C. cf. sublatereundatum West & G.S.West, (m) C. cf. subspeciosum var. validius Nordstedt.