Nitella mucronata (A.Braun) Miquel 1840

Nitella mucronata (A.Braun) Miquel

Current name: Nitella mucronata (A.Braun) Miquel
Red-cyan anaglyph of oogonium and antheridium. Castor Backwater, River Nene, Northamptonshire (as VC32), UK. Collected by Peter Kirby and Sarah Lambert - 07 September 2012. C.F.Carter (chris.carter@6cvw.freeuk,com)

Publication Details
Nitella mucronata (A.Braun) Miquel 1840: 428

Published in: Hall, H.C. (1840). Flora Belgii septentrionalis sive Florae Batavae compendium Vol. II, pars II continens lichenes et algas. pp. i-xvi, 1-477, [1-4]. Te Amsterdam: bij J.C. Sepp.

Type Species
The type species (lectotype) of the genus Nitella is Nitella opaca (C.Agardh ex Bruzelius) C.Agardh.

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

Chara mucronata A.Braun

Type Information
Syntpe locality: "Hab. apud nos rara. — Helv. — Berol." [Switzerland; Berlin]; (Braun 1834: 351) Neotype: Jack; Oktober 1858; NY; Braun, Rabenhorst & Stizenberger, Characeen Eur. 30 (Wood 1965: 504) Notes: Neotype locality: "Salem" [Schleswig-Holstein, Germany?].

Origin of Species Name
Adjective (Latin), ending in a short, sharp point.

General Environment
This is a freshwater species.

The plants are 10-30 cm high and dark green. The axis is between 0.5 -1mm in diameter. The fertile branchlets are divided two or three times, and the sterile branchlets are divided one or two times. The dactyls are 2 (rarely 3) celled, mucronate and have acute end-cells. The species is monoecious. The gametangia are conjoined. The oogonia are solitary or geminate, and often absent from the lowest branchlet nodes. The oogonia are less than 500 m long. The oospores are dark brown and have reticulate membrane and prominent ridges. The antheridia are 200-300 m in diameter.

Nitella mucronata has been found in puddles, ditches and lakes. The water is normally more or less alkaline, oligotrophic to mesotrophic. It can also be found in humic alkaline waters and in brackish water. The species seems to benefit from dredging of canals and ditches. N. mucronata is a perennial species and it is green during the winter. Normally it has fertile plant from July and until September. Ripe oospores, which are dark brown are not common. According to Hasslow (1931) the species is a late-summer to autumn species.

Created: 11 April 2002 by M.D. Guiry.

Last updated: 11 May 2020

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Citing AlgaeBase
Cite this record as:
M.D. Guiry in Guiry, M.D. & Guiry, G.M. 11 May 2020. AlgaeBase. World-wide electronic publication, National University of Ireland, Galway.; searched on 21 May 2024

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