Chamaebotrys proliferus D.L.Ballantine, H.Ruiz & C.Lozada-Troche 2001

Publication Details
Chamaebotrys proliferus D.L.Ballantine, H.Ruiz & C.Lozada-Troche 2001: 71, figs 1-13 (as 'prolifera')

Published in: Ballantine, D.L., Ruiz, H. & Lozada-Troche, C. (2010). Chamaebotrys prolifera sp. nov. (Rhodymeniaceae, Rhodophyta) from Puerto Rico, Caribbean Sea, based on morphology and small subunit rDNA sequences. Phycological Research 58(1): 69-77.

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Type Species
The type species (holotype) of the genus Chamaebotrys is Chamaebotrys boergesenii (Weber Bosse) Huisman.

Status of Name
This name is of an entity that is currently accepted taxonomically.

Type Information
Type locality: San Juan Bay (Pier 8), San Juan (18º 27.766 N, 66º 06.202 W), Puerto Rico.; (Ballantine, Ruiz & Lozada-Troche 2010: 77) Holotype: Hector Ruiz (D.L. Ballantine 7257); 4.xi.2007 ; 1-2 m; US; Alg. Coll. 209253 (Ballantine, Ruiz & Lozada-Troche 2010: 77) Notes: Isotypes: in MICH: MSM; US. Paratypes: D.L.B. 7211, ibid, 6.x.2007; D.L.B. 7443, ibid , 11.ii.2008.

Origin of Species Name
Adjective (Latin), proliferous.

General Environment
This is a marine species.

Description
Plants decumbent, attached at numerous sites with short (to 1.0 mm long) peg-like holdfasts; entire colonies to 5.0 cm across; comprised of compressed ovate to irregularly-shaped vesicles, measuring to 15 mm in largest dimension, with proliferous branching from margins, less commonly branched from the dorsal surfaces; branches septate; adjacent vesicles commonly anastomosing; vesicle wall generally 4 cell layers thick, the two cell-thick medullary layer consisting of an inner layer of large rectangular cells, when viewed in section measuring 125-165(-200) X 65-100 µm, and either a partial layer of triangular medullary cells wedged between the larger medullary cells, measuring 50-75 µm in broadest dimension, or a locally continuous layer of smaller medullary cells; the two cell-layer cortex with an inner layer of spherical to oval cells, 15- 20 µm in broadest dimension, the outermost layer of spherical cells measuring 5-7.5 µm in diameter; the cortex completely covers the medullary cells; numerous (to 12) pyriform gland cells, to 17.5 µm long by 15 µm in diameter, are cut off from large colorless bearing cells that are borne on inner medullary cells or more rarely, directly from the inner medullary cells; tetrasporangia spherical, to 30 µm in diameter are cut off terminally from an inner cortical cell and are located in diffuse nemathecia; plants are monoecious, cystocarps are hemispherical measuring to 800 µm in diameter and 350 µm in height; and protruding equally inwardly and outwardly; spermatangia are cut off in few numbers, apparently randomly from outer cortical cells across the thallus surface. Plants originate as single compressed, peltate vesicles, attached by one or more peg-like holdfasts. The primary vesicles measure to 15 mm in diameter and are typically ovate. Originally branching is from the margins with young branchlets being ovate –compressed. These enlarge and similarly rebranch. With age, branching may also occur from the dorsal surface with an increasing number of vesicles being irregular in shape. Branches are septate at their origin. Anastomoses commonly occur between adjacent vesicles. Mature plants are a chaotic arrangement of vesicles with the entire plant measuring to 5.0 cm broad. Older vesicles may tear with the wall remaining viable and supporting continuing branching. The vesicle walls possess two layers of colorless medullary cells and two layers of cortical cells. The innermost medullary cells are rectangular and measure 125-165(-200) X 65-100 µm. Between the inner medulla and the cortex is a partial layer of triangular medullary cells wedged between the larger medullary cells, measuring 50-75 µm in broadest dimension, or a locally continuous layer of smaller medullary cells. The two-cell layer cortex consists of an inner layer of spherical to oval cells, 15- 20 µm in broadest dimension. The outermost cortical cells are spherical and measure 5-7.5 µm in diameter. The cortex completely covers the medullary cells. Numerous (to 12) pyriform gland cells, to 17.5 µm long by to 15 µm in diameter, are cut off from large colorless bearing cells that are borne on inner medullary cells or more rarely directly from the inner medullary cells. The septa consist of multi-layered medullary cells that increase in layer number with age. Tetrasporangia are spherical, to 30 µm in diameter, and are cut off terminally from an inner cortical cell and are located in somewhat diffuse sori. Adjacent to the tetrasporangium-producing cortical cell, cortical cells also produce single-celled sterile cells. Plants are monoecious. Cystocarps are hemispherical measuring to 800 µm in diameter and 350 µm in height; they protrude equally inwardly and outwardly. Spermatangia are cut off in few numbers, apparently randomly from outer cortical cells across the thallus surface.

Created: 12 March 2010 by M.D. Guiry.

Last updated: 15 August 2017

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Linking to this page: https://www.algaebase.org/search/species/detail/?species_id=136571

Citing AlgaeBase
Cite this record as:
M.D. Guiry in Guiry, M.D. & Guiry, G.M. 15 August 2017. AlgaeBase. World-wide electronic publication, National University of Ireland, Galway. https://www.algaebase.org; searched on 28 March 2024

 
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