Nannotax3 - ntax_non_cocco - Chrysochromulina acantha Nannotax3 - ntax_non_cocco - Chrysochromulina acantha

Chrysochromulina acantha

Classification: ntax_non_cocco -> Haptophytes -> Prymnesiales -> Chrysochromulinaceae -> Chrysochromulina -> definite Chrysochromulina -> Chrysochromulina acantha
Sister taxa: C. acantha, C. andersonii, C. camella, C. campanulifera, C. cymbium, C. leadbeateri, C. parva, C. rotalis, C. scutellum, C. simplex, C. strobilus, C. throndsenii


Citation: Chrysochromulina acantha Leadbeater and Manton 1971
Rank: Species
Basionym: Chrysochromulina acantha Leadbeater and Manton 1971

Catalog entries: Chrysochromulina acantha

Original description: Cells usually saddle shaped, convex dorsally, concave ventrally, c. 6-10 µm in length and breadth, with two parietal pale golden-brown plastids each with a non-projecting pyrenoid. Two equal flagella arising with the haptonema from the concave surface near the posterior end. The haptonema, containing 7 microtubules, c. 40 µm when fully extended (= twice the flagellar length) coiled into a helix of 15-20 gyres when retracted. Cells covered with mucilage and with two layers of very thin scales visible only with an electron microscope, the scales of the outer layer carrying spines, those of the under layer spineless and platelike. The latter, c. 0.5 µm wide x 0.6 µm long, with a pattern of sparse ridges ra- diating from the centre to a thickened margin, rims absent. The spiny scales similar in patterning but circular, e. 0.4-0.5 µm in diameter each carrying a single central spine, c. 0.5 µm long, supported by four decurrent struts reaching the plate margin peripherally but raised above it centrally. Mnciferous bodies numerous, scattered in the cytoplasm near the surface.

Type images:


Cell saddle shaped; Flagella equal, haptonema longer; Scales plate-like & spine-bearing with loosely woven radial ribs overlaying concentric ribs; Pyrenoids immersed (Edvardsen et al. 2011)

Cultures: Strains of this species are maintained in culture, for details see Roscoff Culture Collection.

Geological Range:
Last occurrence (top): Extant. Data source:
First occurrence (base): within No known fossil record modern (0.00-0.00Ma, base in "Holocene" stage). Data source:


Gregson, A. J., Green, J. C. & Leadbeater, B. S. C. (1993). Structure and physiology of the haptonema in Chrysochromulina Prymnesiophyceae. I. Fine structure of the flagellar/haptonematal root system in C. acantha and C. simplex. Journal of Phycology. 29(5): 674-686. gs

Leadbeater, B. S. C. & Manton, I. (1971). Fine structure and light microscopy of a new species of Chrysochromulina (C. acantha). Archiv für Mikrobiologie. 78: 58-69. gs


Chrysochromulina acantha compiled by Jeremy R. Young viewed: 1-6-2023

Taxon Search:
Advanced Search
AphiaID: not found
Short stables page link: Go to to create a permanent copy of this page - citation notes

Comments (0)

No comments yet on this page. Please do add comments if you spot any problems, or have information to share

Add Comment

* Required information
Captcha Image
Powered by Commentics