Porphyra umbilicalis Kützing 1843

Porphyra umbilicalis Kützing

Current name: Porphyra umbilicalis Kützing
Ría de A Coruña, 2011 - 09 December 2011. Ignacio Bárbara (barbara@udc.es)

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.

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Publication 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 19 July 2024

 
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