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Tolypella canadensis T.Sawa

Classification:
Empire Eukaryota
Kingdom Plantae
Subkingdom Viridiplantae
Infrakingdom Streptophyta infrakingdom
Phylum Charophyta
Class Charophyceae
Order Charales
Family Characeae
Genus Tolypella

Pictures

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Tolypella canadensis T.Sawa
Tolypella canadensis from Seglvatnet, Glomfjord, Nordland county. 12 Aug 2009. Anders Langangen.

Tolypella canadensis T.Sawa
Lake Seglvatnet, Glomford is a high mountaim lake (Tolypella canadensis lake). Charophytes were found down to 17 m.. 12 Aug 2009. Andders Langangen.

Tolypella canadensis T.Sawa
Tolypella canadensis.

 

Ulva polypodioides A.P.de Candolle

Tolypella canadensis T.Sawa Lake Seglvatnet, Glomford is a high mountaim lake (Tolypella canadensis lake). Charophytes were found down to 17 m.
©

Publication details
Tolypella canadensis T.Sawa 1973: 47-480, figs 10-15, 20-22

Published in: Sawa, T. (1973). Two new species of Tolypella (Characeae) from North America. Journal of Phycology 9(4): 472-482.

Type species
The type species (lectotype) of the genus Tolypella is Tolypella nidifica (O.F.Müller) Leonhardi.

Status of name
This name is of an entity that is currently accepted taxonomically.

Heterotypic Synonym(s)
Nitella mucronata f. haplophylla O.J.Hasslow 1939

Nomenclatural notes
Synonym Nitella mucronata f. haplophylla Hasslow 1939 - (27 May 2009) -

Habitat notes
Tolypella canadensis is found in oligotrophic lakes and rivers with relatively low water temperatures. Many of the lakes are of the lagoon type, often with streaming water. Localities with T. canadensis are clear water lakes, and the species is found down to 9-13 m. The species is often found in mixed populations with Nitella opaca and N. flexilis. Thes can be a reason why the species has been overlooked. The species is perennial and is often found sterile. Ripe oospores are not common, but are nevertheless found in several localities. Tolypella canadensis is probably one of the few charophytes adapted to northern (polar) environments (another species can be Nitella wahlbergiana). - (27 May 2009) -

General environment
This is a freshwater species.

Description
The plants are normally between 4-30 cm high. The axis is to 400 μm in diameter. The plants are green, unencrusted, Nitella-like, but unlike this it is stiff. The sterile branchlets are undivided, with 2-3 segments. The fertile branchlets have commonly the gametangia in dense heads. The distal cells of dactyls form a mucro, which is an important taxonomic character. The species is monoecious. The oogonia are 1-4 aggregated, to 700 μm long and often stalked. The oospore is brown. The antheridia are up to 400 μm in diameter and stalked.

Habitat
Tolypella canadensis is found in oligotrophic lakes and rivers with relatively low water temperatures. Many of the lakes are of the lagoon type, often with streaming water. Localities with T. canadensis are clear water lakes, and the species is found down to 9-13 m. The species is often found in mixed populations with Nitella opaca and N. flexilis. These can be a reason why the species has been overlooked. The species is perennial and is often found sterile. Ripe oospores are not common, but are nevertheless found in several localities. Tolypella canadensis is probably one of the few charophytes adapted to northern (polar) environments (another species can be Nitella wahlbergiana).

Key characteristics
Without cortex, Nitella-like, stiff appearance, end cell of dactyls form a distinct mucro.

Similar species
No similar species are known.

Type information
Holotype locality: Ontario, Canada: Thunder Bay District: the shore of Lake Superior at Rossport Provincial Picnic Park, along Trans-Canada Hwy. (= Ont. Hwy 17) 0.2 mi east of Rosssport (Sawa 1973: 480). Holotype: Sawa-Hotchkiss-Thorpe 70-7-20-3; 20 July 1970; (Sawa 1973: 480).

Detailed distribution with sources (Click to Load)

Key references
Langangen, A. & I. Blindow (1995). Kransalgen Tolypella canadensis Sawa i Skandinavia (The charophyte Tolypella canadensis in Scandinavia). Polarflokken 19(2): 131-137, 3 figures. [in Norwegian with english summary]

Langangen, A. & L. Zhakova (2002). Tolypella canadensis Sawa (Charales), a charophyte new to the flora of Russia, with remarks on its ecology and distribution. J. Nat. Mus., Nat. Hist. Ser. 17(1-4): 85-89. [in English]

Langangen, A. (1993). Tolypella canadensis, a charophyte new to the European flora. Cryptogamie, Algologie 14: 221-231. [in English]

Langangen, A. (1999). Flere opplysninger om utbredelsen og økologien til kransalgen Tolypella canadensis Sawa (Additional information on the distribution and ecology of the charophyte Tolypella canadensis). Polarflokken 23: 15-20. [in Norwegian with english summary]

Langangen, A. (2007). Charophytes of the Nordic countries. . Oslo: Saeculum ANS.

Langangen, A., M. Koistinen & I. Blindow (2002). The charophytes of Finland. Mem. Soc. Fauna Flora Fennica 78: 17-48.

Langangen,A. & Breivik,A.B. (2010). Kalksjøene på Sundsfjordfjellet i Gildeskål kommune (Nordland) og vegetasjonen i dem, en undersøkelse gjort i tiden 20072009.] Alkaline lakes in Sundsfjordfjellet (Nordland) and their vegetation. Blyttia 68: 200-216.

Pérez, W., Hall, J.D., McCourt, R.M.& Karol, K.G. (2015). Oospore dimensions and morphology in North American Tolypella (Charophyceae, Charophyta). Journal of Phycology 51(2): 310-320.

Created: 25 October 2006 by M.D. Guiry

Verified by: 08 June 2015 by Wendy Guiry

Accesses: This record has been accessed by users 1252 times since it was created.

Verification of data
Users are responsible for verifying the accuracy of information before use, as noted on the website Content page.

References
(Please note: only references with the binomials in the title are included. The information is from the Literature database.)

Langangen, A. & I. Blindow (1995). Kransalgen Tolypella canadensis Sawa i Skandinavia (The charophyte Tolypella canadensis in Scandinavia). Polarflokken 19(2): 131-137, 3 figures. [in Norwegian with english summary]
Langangen, A. & L. Zhakova (2002). Tolypella canadensis Sawa (Charales), a charophyte new to the flora of Russia, with remarks on its ecology and distribution. J. Nat. Mus., Nat. Hist. Ser. 17(1-4): 85-89. [in English]
Langangen, A. (1993). Tolypella canadensis, a charophyte new to the European flora. Cryptogamie, Algologie 14: 221-231. [in English]
Langangen, A. (1999). Flere opplysninger om utbredelsen og økologien til kransalgen Tolypella canadensis Sawa (Additional information on the distribution and ecology of the charophyte Tolypella canadensis). Polarflokken 23: 15-20. [in Norwegian with english summary]
Langangen,A., I. Blindow & M. Koistinen (1997). Tolypella canadensis Sawa (Charophyceae), a charophyte new to the flora of Finland . Memoranda Societatis poro Fauna et Flora Fennica 73: 53-56. [in English]

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Citing AlgaeBase
Cite this record as:
Wendy Guiry in Guiry, M.D. & Guiry, G.M. 2018. AlgaeBase. World-wide electronic publication, National University of Ireland, Galway. http://www.algaebase.org; searched on 10 December 2018.

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