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CATALOG - Monochrysis lutheri


Folder trail: ntax_Farinacci -> Haptophytes -> Monochrysis -> Monochrysis lutheri
Folders this level: M. lutheri

Original descriptions of taxa. For coccolithophores, and many calcispheres, these are pages from the Farinacci & Howe Catalog of Calcareous Nannofossils. In other cases (e.g. non-calcifying haptophytes) the data is directly compiled on this site. The "Catalogue of Calcareous Nannofossils" was originally compiled by Prof A. Farinacci 1969-1989, since 2000 it has been updated and extended by Richard Howe - see The Farinacci and Howe Catalog - an Introduction.
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Current identification/main database link: Pavlova lutheri (Droop 1953) Green 1975

Compiled data

Citation: Monochrysis lutheri Droop 1953
Taxonomic rank: species
Described on page(s) : 34-35
Standardised type level: 160_HOLOCENE
Farinacci catalog page (& compiler): n/a
Current citation: Pavlova lutheri (Droop 1953) Green 1975


Original Description

Cells scarcely metabolic, flattened, more or less triangular or square, often curved, 6-10 µm in diameter and 2-3 µm thick. Flagellum X 1 to X 1½ body diameter in length, inserted in the middle of the concave side (i.e. ventral depression), curved when at rest. Chromatophores olive-yellow, simple, two or three. Stigma large, pale, oblong, associated with one of the chromatophores on the concave side. Protoplasm clear with two or three very conspicuous refractive reserve bodies.

Etymology:
Named in honour of Prof. Alexander Luther, Director of the Zoological Station, Tvärminne.

Extra details from original publication
A small Chrysophycean clearly referable to Monochrysis Skuja (1948), this form combined some of the characters of M. vesiculifera Skuja and M. major Skuja. It differs from the former in being much more flattened, and from the latter in being smaller. M. aphanaster Skuja has a stellate, not simple chromatophore.

Eight records of M. lutheri were obtained at Tvärminne, and three from Gässtens Viten in the Öregrund archipelago, Sweden. Of the eiggt Tvärminne records, four were from Type III pools. The limits of the salinity range in which it was found are great ('fable 10), but salt pools were favoured. In five of the records it was abundant and was extremely dense, colouring the water brown in two of them. These two were small pools 3 cm. deep and on the verge of drying up, with salinities of 9 and 33 °/00 respectively.

References:

Droop, M. R. (1953). On the ecology of flagellates from some brackish and fresh-water pools of Finland. Acta Botanica Fennica. 51: 3-52. gs


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Monochrysis lutheri: Catalog entry compiled by Jeremy Young. Viewed: 17-2-2025

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