Cresia opalescens C.Lozada-Troche, D.L.Ballantine & H.Ruíz 2010
Publication Details
Cresia opalescens C.Lozada-Troche, D.L.Ballantine & H.Ruíz 2010: 296, figs 1-8
Published in: Lozada-Troche, C., Ballantine, D.L. & Carmona, J. (2010). Cresia opalescens gen. et sp. nov. (Rhodymeniaceae, Rhodophyta) from Puerto Rico, Caribbean Sea. Cryptogamie Algologie 31(3): 293-303.
Type Species
This is the type species (holotype) of the genus Cresia.
Status of Name
This name is of an entity that is currently accepted taxonomically.
Type Information
Type locality: Turrumote Reef, La Parguera (17°56.097N, 67°01.130W), Puerto Rico; (Lozada-Troche, Ballantine & Carmona 2010: 298) Holotype: Hector Ruíz (David L. Ballantine 6334); 5.x.2004; 11 m; US; Alg. Coll. # US-209107 (Lozada-Troche, Ballantine & Carmona 2010: 298) Notes: Paratypes: Edge of insular shelf, offshore La Parguera: D.L.B. 6343, 14 m, (Coll. H.R.) 15.x.2004. Media Luna Reef, La Parguera: D.L.B. 5754, 14 m, (Coll. H.R.) 4.xi.2002; D.L.B. 6296, ibid., 12m, 27.viii.2004; D.L.B. 6649, ibid., 11 m, 22.viii.2005. Turrumote Reef, La Parguera: D.L.B. 5740, 17 m, (Coll. H.R.) 21.x.2002; D.L.B. 6263, ibid., 9 m, 6.vii.2004; D.L.B. 6813, ibid., 3 m, 11.ix.2005; D.L.B. 6903, ibid., 12 m, 21.xii.2005. Guanica: Edge of insular shelf (17°55.401N, 66°53.852W): D.L.B. 5707, 20 m, (Coll. H.R.) 8.viii.2002.
General Environment
This is a marine species.
Description
Mature thalli to 7.0 mm high; normally single, rarely two, small vesiculate branches expand rapidly above a short, 1-2 mm long hollow stipe, resulting in a plant with a peltate appearance; the inflated branches to 7 mm across; thallus wall consisting of 2 layers; the single medullary layer composed of larger rectangular cells, to 100 ?m in length by 50-60 (85) µm in height, with smaller triangular-shaped cells, to 30 µm in largest dimension, occasionally wedged between; the cortex consists of 2 layers, inner cortical cells rounded to tangentially elongate, 15-20 µm in diameter, outer cortical cells mostly spherical, 3-4 µm in diameter; gland cells produced 1-3 per supporting medullary cell, cut off from inner medullary cells or medullary cells which project into the cavity, gland cells mostly pyriform, to 23 ?m in length and to 18 µm wide; plants monoecious; cystocarps slightly protruding, 270-320 µm in diameter, outer cortical cells cut off up to 5 spermatangial mother cells, to 8 µm in length, in a periclinal file, spermatangia, 2-5 µm in diameter, cut off terminally; cruciately divided tetrasporangia, nearly spherical to slightly ovate and measuring to 25µm in length and to 20 µm in width and are intercalary in the cortex.
Created: 23 September 2010 by M.D. Guiry.
Last updated: 23 September 2010
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Citing AlgaeBase
Cite this record as:
M.D. Guiry in Guiry, M.D. & Guiry, G.M. 23 September 2010. AlgaeBase. World-wide electronic publication, National University of Ireland, Galway. https://www.algaebase.org; searched on 26 April 2024
