Geminigera | Plagioselmis | TeleaulaxKerstin Hoef-Emden and John M. Archibald
- Geminigera cryophila
- Plagioselmis prolonga
- Teleaulax (non-monophyletic)
- Teleaulax acuta
- Teleaulax merimbula
- Geminigera described by Hill; type species Geminigera cryophila (marine; Hill 1991).
- Plagioselmis described by Butcher; invalid taxon, no type species designated (Butcher 1967).
- Teleaulax described by Hill; type species Teleaulax acuta (marine; Hill 1991)
- Nucleomorph free in periplastidial space or embedded in nucleus
- Type of biliprotein: PE545
- Probably dimorphic
- Light microscopy: red to bright brown cryptophytes, predominantly marine, one or two plastids each with a pyrenoid
- Ultrastructure of Geminigera: one deeply bi-lobed plastid with two pyrenoids, nucleomorph embedded in nucleus, sheet-like inner periplast, surface periplast component with fibrils and scales, combination of furrow and gullet, keeled rhizostyle.
- Ultrastructure of Plagioselmis: hexagonal plates (IPC), antapical tail without plates, furrow only (Novarino et al. 1994)
- Ultrastructure of Teleaulax: sheet-like inner periplast component, fibrillar surface periplast component, furrow only, keeled rhizostyle
- Marine or freshwater
Discussion of Phylogenetic Relationships
Similar to Cryptomonas and the Rhodomonas/Rhinomonas/Storeatula genus complex dimorphism seems to be present in this group (Figure 1; Deane et al. 2002).
Deane JA, Hill DRA, Brett SJ, McFadden GI (2002) Cryptomonad evolution: Nuclear 18S rDNA phylogeny versus cell morphology and pigmentation. J. Phycol. 38: 1236-1244
Butcher RW (1967) An Introductory Account of the Smaller Algae of British Coastal Waters. Part IV: Cryptophyceae. Fishery Investigations, Series IV. Ministry of Agriculture, Fisheries & Food, Her Majesty's Stationary Office, London
Hill DRA (1991a) A revised circumscription of Cryptomonas (Cryptophyceae) based on examination of Australian strains. Phycologia 30: 170-188
Novarino G, Lucas IAN, Morrall S (1994) Observations on the genus Plagioselmis (Cryptophyceae). Cryptogam. Algol. 15: 87-107
Shalchian-Tabrizi K, Bråte J, Logares R, Klaveness D, Berney C, Jakobsen KS (2008) Diversification of unicellular eukaryotes: cryptomonad colonizations of marine and fresh waters inferred from revised 18S rRNA phylogeny. Environ. Microbiol. 10: 2635-2644
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Universität zu Köln, Köln, Germany
John M. Archibald
Dalhousie University, Halifax, Nova Scotia, Canada
Correspondence regarding this page should be directed to Kerstin Hoef-Emden at and John M. Archibald at
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- First online 14 September 2008
- Content changed 02 April 2010
Citing this page:
Hoef-Emden, Kerstin and John M. Archibald. 2010. Geminigera | Plagioselmis | Teleaulax. Version 02 April 2010 (under construction). http://tolweb.org/Geminigera_%7C_Plagioselmis_%7C_Teleaulax/128541/2010.04.02 in The Tree of Life Web Project, http://tolweb.org/