Home
About
Categories
Photo gallery
Taxa list
Acronymes

Contact
Disclaimer


The database is hosted by Kiel University
and is established by Magda Wieckowska-
Lüth, Wiebke Kirleis and Kay Schmütz,
Institute for Prehistoric and Protohistoric Archaeology.

© Wieckowska-Lüth/Kirleis/Schmütz 2020

Type: UG-1237

Category: Algae

Taxonomical identification: Pediastrum boryanum cf. var. forcipatum

First publication: Gelorini, V., Verbeken, A., van Geel, B., Cocqyt, C. and Vershuren, D. (2011) Modern non-pollen palynomorphs from East African lake sediments. Review of Palaeobotany and Palynology 164, 143–173

Other publication/s:
Komárek, J. and Jankovská, V. (2001) Review of the green algal genus Pediastrum. Implication for pollen-analytical research. Bibliotheca Phycologia 108, 1–127
Compère, P. (1970) Contribution à l'étude des eaux douces de l'Ennedi, VI. Algues. Bulletin de l'Institut Fondamental d'Afrique Noire 32 (1), 18–72

Description: Coenobia nearly circular to irregular in outline, hyaline to pale yellow, 50–100 μm in diameter, comprised of 32–64 tightly packed cells. Peripheral cells with two long, narrow, hyaline processes on little developed lobes, margin between them shallowly concave, cell wall densely and distinctly granular. All cells 12–22 μm. Pediastrum boryanum var. forcipatumis a rare taxon and taxonomically not clearly defined, but probably more thermophilic than other P. boryanum varieties.

(Sub-) Fossil occurence: No information

Co-occurence: No information

Modern occurence: It is mainly distributed in tropical and warm-temperate zones (Komárek and Jankóvska, 2001). In Africa it has previously been reported from Chad (Compère, 1970).

Palaeoenvironmental indication: No information