Porphyra drewiana & E.C.
Porphyra drewiana Coll & E.C.Oliveira 2001: 67-72, figs 1-11, 1 table
Published in: Coll, J. & Oliveira, E.C. (2001). Porphyra drewiana, a new species of red algae (Bangiales, Rhodophyta) from Brazil. Phycological Research 49: 67-72.
Status of name
This name is currently regarded as a synonym of Pyropia spiralis (E.C.Oliveira & Coll) M.C.Oliveira, D.Milstein & E.C.Oliveira
No synonyms are currently included in AlgaeBase.
According to Sutherland et al. (2011: 1145), this is a variety of Porphyra spiralis (M. Oliveira, unpubl.). - (17 Jan 2012) - Wendy Guiry
This is a marine species.
Plants monostromatic, typically with one entire blade, rarely with deep lobes or a few blades; attachment by a distinct discoidal holdfast; blades orbiculate, oblong, obovate or broadly lanceolate, umbilicate or cordate, up to 14 cm long; color deeply violet when alive; texture membranaceous, delicate, not rubbery or cartilaginous; not firmly adherent to paper on drying, then papery and breakable. Infertile margin entire, slightly undulated, withough microscopic teeth. Vegetative cells with one stellate plastid and a central pyrenoid, oval to polygonal, 10-12µm in surface view; total thickness of the blades, at the vegetative central portion, 25-45 µm; fertile pluristromatic portions are about 10-15 µm thicker. Small, elongate, irregularly distributed patches (50-150 µm) call attention to vegetative portions of the blade. In cross section these patches are formed by periclinal divisions of the vegetative cells, resulting in locally bi-pluristromatic areas, 2-3 times thicker than the rest of the thallus. Monospores (type II), neutral spores or aplanospores were never found. Spermatangia and carposporangia are intermixed in a marginal-submarginal rosy band, which is almost continuous around the blade, which becomes perforated and eroded after spermatia and carpospores are shed. The first division of the carpospores and the spermatia mother cell is periclinal. The plastid divides before the nucleus in the first division of the carpospore mother cell, remaining in a central position between the two daughter plastids. Eight to 16 carpospores in two tiers and 16 spermatia in four tiers are produced per mother cell. Three chromosomes were counted in the nuclear divisions leading to spermatium formation. At the type locality the leafy phase was collected on rocks at the upper intertidal fringe, in euthrophic waters at moderate wave-exposed sites, from May to December, being fertile after July.
Type locality: Brazil: Est. Espírito Santo: Ilha do Boi, Vitória (Silva 1996-to date). Type: E.C. Oliveira; 4.xii. 1987; SPF 53750 (Silva 1996-to date
Milstein, D. & Cabral de Oliveira, M. (2005). Molecular phylogeny of Bangiales (Rhodophyta) based on small subunit rDNA sequencing: emphasis on Brazilian Porphyra species. Phycologia 44: 212-221.
Sutherland, J.E., Lindstrom, S.C., Nelson, W.A., Brodie, J., Lynch, M.D., Hwang, M.S., Choi, H.-G., Miyata, M., Kikuchi, N., Oliveira, M.C., Farr, T., Neefus, C., Mols-Mortensen, A. Milstein, D. & Müller, K.M. (2011). A new look at an ancient order: generic revision of the Bangiales (Rhodophyta). Journal of Phycology 47(5): 1131-1151.
Wynne, M.J. (2005). A check-list of benthic marine algae of the tropical and subtropical western Atlantic: second revision. Beihefte zur Nova Hedwigia 129: 1-152.
Created: 26 April 2002 by M.D. Guiry
Verified by: 06 May 2015 by Wendy Guiry
Accesses: This record has been accessed by users 1738 times since it was created.
Verification of data
Users are responsible for verifying the accuracy of information before use, as noted on the website Content page.
(Please note: only references with the binomials in the title are included. The information is from the Literature database.)
Coll, J. & Oliveira, E.C. (2001). Porphyra drewiana, a new species of red algae (Bangiales, Rhodophyta) from Brazil. Phycological Research 49: 67-72.
Linking to this page: http://www.algaebase.org/search/species/detail/?species_id=46901
Cite this record as:
Wendy Guiry in Guiry, M.D. & Guiry, G.M. 2019. AlgaeBase. World-wide electronic publication, National University of Ireland, Galway. http://www.algaebase.org; searched on 19 June 2019.