Gracilaria perplexa K.Byrne & Zuccarello 2002
Gracilaria perplexa K.Byrne & Zuccarello in K.Byrne & al. 2002: 302, 303, figs 4 a-g
Published in: Byrne, K., Zuccarello, G.C., West, J., Liao, M.-L. & Kraft, G.T. (2002). Gracilaria species (Gracilariaceae, Rhodophyta) from southeastern Australia, including a new species, Gracilaria perplexa sp. nov.: Morphology, molecular relationships and agar content. Phycological Research 50(4): 295-312.
Publication date: December 2002
Status of name
This name is currently regarded as a synonym of Hydropuntia perplexa (K.Byrne & Zuccarello) Conklin, O'Doherty, & A.R.Sherwood
Type locality: Bare Island, La Perouse, Botany Bay, New South Wales, Australia (Byrne et al. 2002: 302). Holotype: K. Byrne & J. Bartlett; 22 May 1999; MELU 042862 (Byrne et al. 2002: 302). Notes: Isotype: MELU A042863 and A042864, N. Paul, Dec. 1998.
No synonyms are currently included in AlgaeBase.
Known only from type locality and Kurnell, New South Wales
This is a marine species.
Terete shoots to 15 cm, branching variable, subdichotomous to four orders, acute tips, sometimes arcuate, primary axes 1.5-1.7 mm diam., cortex 30-40 µm wide, two to four cell layers, with scattered hyaline cells (hair cell bases). Transition to medulla abrupt. Medullary cells, poilygonal, to 250-320 µm diam. Polysiphonia-type life history, gametophytes dioecious, cystocarps globose, rostrate, slightly constricted at base, to 1.3 mm diameter, solitary or sometimes aggregated; traversing filaments directed toward cystocarp cavity floor, carposporangia subspherical to 25 µm diameter, pericarp, 220-270 µm thick with 7-10 cell layers; spermatangia borne in compound conceptacles 50-85 µm across (Polycavernosa-type) in subcortex/outer medulla, tetrasporangia cruciate-decussate, 17-26 x 26-29 µm scattered in outer cortex.
Source of current name
Gurgel, C.F.D., Norris, J.N., Schmidt, W.E., Le, H.N. & Fredericq, S. (2018). Systematics of the Gracilariales (Rhodophyta) including new subfamilies, tribes, subgenera, and two new genera, Agarophyton gen. nov. and Crassa gen. nov. Phytotaxa 374(1): 1-23.
Conklin, K.Y., O'Doherty, D.C. & Sherwood, A.R. (2014). Hydropuntia perplexa, n. comb. (Gracilariaceae, Rhodophyta), first record of the genus in Hawaii. Pacific Science 68(3): 421-434.
Created: 29 November 2004 by Sandy Lawson
Verified by: 12 March 2019 by M.D. Guiry
Accesses: This record has been accessed by users 1159 times since it was created.
Verification of data
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(Please note: only references with the binomials in the title are included. The information is from the Literature database.)
Byrne, K., Zuccarello, G.C., West, J., Liao, M.-L. & Kraft, G.T. (2002). Gracilaria species (Gracilariaceae, Rhodophyta) from southeastern Australia, including a new species, Gracilaria perplexa sp. nov.: Morphology, molecular relationships and agar content. Phycological Research 50(4): 295-312.
Yokoya, N.S., West, J.A. & Luchi, A.E. (2004). Effects of plant growth regulators on callus formation, growth and regeneration in axenic tissue cultures of Gracilaria tenuistipitata and Gracilaria perplexa (Gracilariales, Rhodophyta). Phycological Research 52(3): 244-254.
Linking to this page: http://www.algaebase.org/search/species/detail/?species_id=65929
Cite this record as:
M.D. Guiry in Guiry, M.D. & Guiry, G.M. 2021. AlgaeBase. World-wide electronic publication, National University of Ireland, Galway. http://www.algaebase.org; searched on 17 September 2021.