Porphyra umbilicalis Kützing 1843
Current name:
Porphyra umbilicalis Kützing
Porphyra umbilicalis, Fountainstown, Co. Cork - 25 August 2010. Michael Guiry (mike.guiry@nuigalway.ie)
Publication Details
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, [1]-142, [part 2:] 143-458, 1, err.], pls 1-80. Leipzig: F.A. Brockhaus.
Request PDFPublication date: 14-16 Sep 1843
Type Species
The type species (lectotype) of the genus Porphyra is Porphyra purpurea (Roth) C.Agardh.
Status of Name
This name is of an entity that is currently accepted taxonomically.
Type Information
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).
General Environment
This is a marine species.
Description
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.
Habitat
On rocks, mussels, etc., midtidal to splash zone, generally distributed, abundant, especially on exposed coasts.
Key Characteristics
Lettuce-like appearance and habitat.
Similar Species
May be a species complex.
Created: 31 March 1996 by M.D. Guiry.
Last updated: 01 April 2022
Verification of Data
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Linking to this page: https://www.algaebase.org/search/species/detail/?species_id=102
Citing AlgaeBase
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 25 November 2024
