Talk:Red algae

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Number of species[edit]

this page should say how many species are in this phylum. --Savant13 20:27, 21 December 2006 (UTC)

The number was already there, on the first line in the "Species" section, although now someone has added a (substantially different) number to first sentence of the article. -R. S. Shaw 19:19, 22 December 2006 (UTC)
I don't know where either of these numbers are now, I don't think I deleted either! However I have now added the number "5000 - 6000" Hope this is OK Osborne 15:50, 12 February 2007 (UTC)

"There are over 10,000 described species of red algae. How many real species there are, however, remains an unanswered question. Estimates vary by over 100%..." ref.Woelkerling, W.J. Introduction in Biology of red algae. Cole,K.M. and Sheath, R.G. (Eds) Cambridge University Press, Cambridge. Osborne 08:44, 27 April 2007 (UTC)

Where is R. Riloprelorubrum

Merge with Red alga[edit]

Rather than use the "move" tab at the top of the article, a month or two ago someone copied the text of Red alga and pasted it into Red algae. Since then various edits have been done to both of these now-separate articles. They need to be merged back together (finding and moving the changes of one into the other, then redirecting one).

Which title should survive seems a bit contentious. My vote would be for the "algae" form because it is the commonly used name. I think that overrides the fact that it is plural rather than singular. -R. S. Shaw 03:23, 1 June 2006 (UTC)

Thank you for making sense of this. I agree that a move to Red algae would be in order (there is currently a redirect from Red Algae to Red alga), so Red algae would be the article and Red alga the redirect. As to the use of the plural form, I'm not a biologist, but as an editor, the plural form makes more sense since most of the statements in the article are about algae in the aggregate. Sunray 18:26, 8 June 2006 (UTC)
Since your proposal has been there for a week and all those who have commented agree, we might as well proceed. Do you want to do the honors? Sunray 06:20, 9 June 2006 (UTC)
Or I can do it if you like. Sunray 20:09, 9 June 2006 (UTC)
I've done it. Not much change, actually. I noticed the current article doesn't mention the singular form, alga. Maybe it should. -R. S. Shaw 20:59, 9 June 2006 (UTC)

Why is the topic "Red tide" included under the "See Also?" There appears to be no disclaimer anywhere that Red Tides are caused by Dinoflagellates, not by Red Algae, just this option to move from the Rhodophyta to another phylum without a reason for doing so. This is misleading.

I've added a note to reflect your concern. I do think that it is good to have a link to "Red tide" as many non-biologist types may be interested to know that they are different. Please check the note to make sure I've got it right. Sunray 18:22, 14 June 2006 (UTC)

It should be a "Note: Red Tides are caused by Dinoflagellates and not by Red Algae," not a "See Also," as this latter implies additional information on the correct topic. However, if your topic is the Rhodophyta, "Red Tides" is NOT additional information, it is spurious information. Correcting misinformation or pointing out difficulties in vernacular nomenclature that confuses the layman is always useful. This is also why it would be clearer to title the articles by their scientific names rather than their common names, Rhodophyta over Red Algae as an example. "Algae" may mean only the eukaryotic photosynthetic protists. But it also may include the photosynthetic bacteria. It is not a scientific term and lends itself to confusion. Rhodophyta, on the other hand, describes a specific monophyletic group of eukaryotic photosynthetic organisms that share a common origin. KP

Uninformative photograph[edit]

The photograph of red alga iridescence is uninformative because it's scale is unclear. Is it a satellite photo or a photomicrograph? Is it an algal outbreak or a single cell? (talk) 17:15, 14 November 2009 (UTC)New user


Red algae are either a separate division in the Kingdom Plantae (Rhodophyta or Rhodophycophyta) or a separate phylum in the Kingdom Protoctista (Rhodophyta). Ref p.1 Woelkerling, W.J. in Cole, K.M. and Sheath, R.G. 1990. Biology of the Red Algae. Osborne 15:45, 13 June 2007 (UTC)

Anything written in 1990 is seriously out of date as regards classification, and should be mentioned only for historical reasons. Peter coxhead (talk) 08:58, 23 April 2010 (UTC)


I couldn't find any information in this article whether they can reproduce vegetatively (for example by the slicing of the plant) or not. I would like to complete the Hungarian article, so if you can help me with this, I will thank you!:) Kenadra (hunwiki) 21:58, 18 January 2010 (UTC) —Preceding unsigned comment added by (talk)

Serious problem with Lee 2008 classification[edit]

I don't currently have access to the Lee 2008 source, but if the summary in the table in the Taxonomy section of the article is correct, it creates serious consistency problems. The red algae are put in the Chromalveolata. However, the current text of the linked Chromalveolata article makes it clear that the group cannot possibly include red algae. For the present, I've removed the link. Can anyone please confirm that the extract from Lee 2008 is correct? If it is, the Chromalveolata article needs some changes! Peter coxhead (talk) 09:16, 23 April 2010 (UTC)

The world of algae would need some major changes, too. Like the structure of the chloroplast endoplasmic reticulum would need to move back 3 by. Until then, the article can wait precise confirmation or another 3 by. --Kleopatra (talk) 02:05, 31 January 2011 (UTC)
The Lee 2008 page in question should be available through Google Book Search at this link. (Google Book Search often doesn't work as well from outside the US.) The mention of Chromalveolata was added in this edit [1] in June of 2008 by User:Smith609. The word "Chromalveolata" appears nowhere in the Lee book. I support the removal of the mention of Chromalveolata from this page. --Arcadian (talk) 06:35, 31 January 2011 (UTC)
I wish we had seen this sooner, though. Lee doesn't use the word "Chromalveolate," but does have this clade, minus the name and the non-photosynthetic organisms. --Kleopatra (talk) 07:37, 31 January 2011 (UTC)