Proboscia alata (Brightwell) Sundström 1986

A-C = Part of cells (arrow=claspers) (LM), C=Auxospores; D = Valve with proboscis and claspers (SEM)

Synonym(s): Rhizosolenia alata Brightwell 1858

Life-form: Solitary or united in chains

Size: Diameter = 2.5-13 µm

Resting spore:

Note: There are several closely allied taxa (Sundström 1996)

Distinctive features: Proboscis with truncate tip. Bands in two columns and with pores and loculate areolae

Similar species:


Drebes, G. 1974. Marines Phytoplankton, Eine Auswahl der Helgoländer Planktonalgen (Diatomeen, Peridineen). Georg Thieme Verlag, Stuttgart. 186 pp.

Hasle, G. R. & Syvertsen, E. E. 1996. Marine diatoms. In: Tomas, C. R. (ed.) Identifying marine diatoms and dinoflagellates. Academic Press, Inc., San Diego, p. 5-385.

Sundström, B. G.1986. The marine genus Rhizosolenia. Doctoral Dissertation, Lund University, Lund, Sweden. 117 pp.

  Copyright © 1996-2006, Mats Kuylenstierna & Bengt Karlson All rights reserved.
Last modified on 15 September, 2006

Swedish Meteorological and Hydrological Institute

Department of Marine Ecology, Göteborg University, Sweden