Porphyra umbilicalis Kützing 1843
Porphyra umbilicalis Kützing
Spanish Point, Co. Clare, Ireland; lower intertidal mussels with Ulva sp. - 04 August 2004. Michael Guiry (firstname.lastname@example.org)
Porphyra umbilicalis Kützing 1843: 383
Published in: Kützing, F.T. (1843). Phycologia generalis oder Anatomie, Physiologie und Systemkunde der Tange. Mit 80 farbig gedruckten Tafeln, gezeichnet und gravirt vom Verfasser. pp. [part 1]: [i]-xxxii, -142, [part 2:] 143-458, 1, err.], pls 1-80. Leipzig: F.A. Brockhaus.
Publication date: 14-16 Sep 1843
Status of Name
This name is of an entity that is currently accepted taxonomically.
Type locality: Scotland: Easdale, Argyll; (Brodie & al. 2008: 1330) Neotype: J. Brodie & P.K. Hayes; 23 July 1998; From the back of a limpet; BM; 000769632 (Brodie & al. 2008: 1330) Notes: Illustrated in Brodie et al. (2008: fig. 1 B).
This is a marine species.
Gametophyte thallus reddish brown, brownish, grey brown or olive green in the field, drying to brownish purple, attached by a minute but stout holdfast; stipe indistinct; blade orbiculate to elongate, auriculate and/or cucullate; base slightly to extremely cordate, overlapping to appear umbilicate; margins sometimes much pleated; blades single or multiple, sometimes forming a rosette. Thallus monostromatic, 58–70 µm thick with cells in surface view 8–16 × 6–8 µm and in transverse section 30–34 × 9–10 µm. Usually dioecious; sori marginal; male gametangia in packets of 4 × 4 in surface view and ×8 in transverse section ( = 128 gametes); zygotosporangia in packets of 2 × 4 in surface view and ×2 in transverse section ( = 16 zygotospores). Neutral sporangia are sometimes present.
On rocks, mussels, etc., midtidal to splash zone, generally distributed, abundant, especially on exposed coasts.
Lettuce-like appearance and habitat.
May be a species complex.
Created: 31 March 1996 by M.D. Guiry.
Last updated: 01 April 2022
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Linking to this page: https://www.algaebase.org/search/species/detail/?species_id=102
Cite this record as:
M.D. Guiry in Guiry, M.D. & Guiry, G.M. 01 April 2022. AlgaeBase. World-wide electronic publication, National University of Ireland, Galway. https://www.algaebase.org; searched on 10 December 2023