Lithophyllum subplicatum (Foslie) Basso & Caragnano & Gall & Rodondi, 2015

Basso, Daniela, Caragnano, Annalisa, Gall, Line Le & Rodondi, Graziella, 2015, The genus Lithophyllum in the north-western Indian Ocean, with description of L. yemenense sp. nov., L. socotraense sp. nov., L. subplicatum comb. et stat. nov., and the resumed L. affine, L. kaiseri, and L. subreduncum (Rhodophyta, Corallinales), Phytotaxa 208 (3), pp. 183-200 : 190-191

publication ID

https://doi.org/ 10.11646/phytotaxa.208.3.1

persistent identifier

https://treatment.plazi.org/id/03C43948-EC68-492B-B3C8-FD6BFD581027

treatment provided by

Felipe

scientific name

Lithophyllum subplicatum (Foslie)
status

comb. et stat. nov.

Lithophyllum subplicatum (Foslie) comb. et stat. nov.

Figures 6–7 View FIGURE 6 View FIGURE 7 ; Table 3

BASIONYM: Lithophyllum okamurae forma subplicatum Foslie 1901a (K. Norske Vid. Selsk. Skr.: 18) ( Woelkerling et al. 2005: 173).

NOMENCLATURAL SYNONYM: L. kaiseri ? f. subplicata Foslie (1903) , L. kotschyanum f. subplicatum Silva in Silva et al. (1996, p. 248) ( Woelkerling et al. 2005).

LECTOTYPE: TRH, A20-1286 , includes slide 596 ( Fig. 6 View FIGURE 6 ) (Woelkerling 1993: 212).

ETYMOLOGY: the specific epithet means “begged for”.

ILLUSTRATIONS OF TYPE MATERIAL: Printz 1929: pl. 65, fig. 3.

TYPE LOCALITY: Samoa Islands, no collector and date given; ex Botanical Museum Hamburg (Woelkerling 1993; Woelkerling et al. 2005).

MATERIAL EXAMINED: Pacific Ocean, Samoa Islands, the lectotype TRH A 20-1286.

HABITAT AND PHENOLOGY: unknown.

GEOGRAPHIC DISTRIBUTION: L. subplicatum is known only from the type locality, Samoa Islands. Other entries need verification ( Table 1).

HABIT AND VEGETATIVE STRUCTURE: Plants non-endophytic, with fruticose growth-form. The long protuberances are cylindrical and dichotomously branched, diverging, about 3–4 mm in diameter, flattened and anastomosing at their tips. The plant is 7 cm high and 11 cm in diameter ( Fig. 6C View FIGURE 6 ).

Plant structure pseudoparenchymatous ( Fig. 7A–B View FIGURE 7 ). Basal or ventral layer (= hypothallium) dimerous ( Fig. 7B View FIGURE 7 ). Hypothallial cells 20–23 μm long and 12–20 μm in diameter ( Tab. 3). Peripheral region (= perithallium) composed of filaments of cells curving outwards toward the thallus surface, 15–28 μm long and 10–18 μm in diameter ( Fig. 7B View FIGURE 7 ). Cells of adjacent filaments joined by secondary pit connections, cell fusions not observed. Palisade cells not observed. Single trichocytes 30–53 μm long and about 12–15 μm in diameter, abundantly distributed in the perithallium and at the thallus surface ( Fig. 7C View FIGURE 7 ). Single epithallial cells flattened, about 10–13 μm in diameter and 2–3 μm long ( Tab. 3).

REPRODUCTION: Uniporate conceptacle chambers, presumed tetra- or bisporangial, protruding over the surrounding thallus surface, becoming buried in the thallus, 330–360 μm in diameter and 100–170 μm high, with pore-canal 80–110 μm long ( Fig. 7D View FIGURE 7 ; Tab. 3). Floor of the conceptacle chamber convex upward below a central columella. The conceptacle chamber floor is 13–15 cells below the thallus surface. Roof filaments 6–8 cells long, including the terminal epithallial cell ( Fig. 7D View FIGURE 7 ; Tab. 3). Gametangial and carposporangial conceptacles unknown.

REPRESENTATIVE SEQUENCE: KP696792 (LSU).

TRH

Norwegian University of Science and Technology - Herbarium

A

Harvard University - Arnold Arboretum

Kingdom

Plantae

Phylum

Rhodophyta

Order

Cryptonemiales

Family

Corallinaceae

Genus

Lithophyllum

Loc

Lithophyllum subplicatum (Foslie)

Basso, Daniela, Caragnano, Annalisa, Gall, Line Le & Rodondi, Graziella 2015
2015
Loc

? f. subplicata

Foslie 1903
1903
Loc

Lithophyllum okamurae forma subplicatum

Foslie 1901
1901
Loc

L. kaiseri

Heydrich 1897
1897
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