Leptogium coralloideum (Meyen & Flot.) Vain. (1915: 110)

Kitaura, Marcos J., Bernardo, Caique M., Koch, Natália M., Rodrigues, Andressa S., Torres, Jean-Marc, Barbosa, Thiago D., Canêz, Luciana Da S., Spielmann, Adriano A., Honda, Neli K., Fleig, Mariana & Lorenz, Aline P., 2019, Leptogium (Collemataceae, Peltigerales) from Mato Grosso do Sul state, Brazil: nine new records, three new taxa and a key for the species, Phytotaxa 399 (2), pp. 127-146 : 132

Leptogium coralloideum (Meyen & Flot.) Vain. (1915: 110) . ( Figure 1D )

≡ Leptogium diaphanum f. coralloideum Meyen & Flot. (1843: 226) .

Type:—not traced ( Jørgensen 1994; Galloway & Jørgensen 1995).

Description: Verdon (1992).

Notes: Leptogium coralloideum is characterized by the ridged thallus covered by isidia on the ridges and margin of the thallus.

Leptogium coralloideum is the isidiate counterpart of L. phyllocarpum ( Dodge 1933) , but is usually found sterile and can be confused with L. isidiosellum (Riddle) Sierk. While in Leptogium coralloideum the proper exciple is paraplectenchymatous, in L. isidiosellum the cortex of the thalline exciple is paraplectenchymatous.

Distribution in Brazil: Mato Grosso ( Malme 1924); Mato Grosso do Sul, in Ponta Porã ( Osorio 1992); Minas Gerais ( Malme 1924); Paraná ( Osorio 1977); Rondônia ( Aptroot & Cáceres 2014); São Paulo ( Benatti et al. 2013); Sergipe ( Cáceres et al. 2014); and Rio Grande do Sul ( Spielmann 2006).

Examined material: BRAZIL. Mato Grosso do Sul: Jaraguari, Furnas do Dionísio, 20°09’00.5”S 54°34’28.2”W, 440 m elev., 02 May 2015. T.D. Barbosa, C.M. Bernardo 672.

Figures

FIGURE 1. A–F. Leptogium species.A. L. austroamericanum (TH Stefanello 79). B. L. chloromelum (SS Moura 111). C. L. cochleatum (VJ Pott 6281). D. L. coralloideum (TD Barbosa 672). E. L. cyanescens (SML Souza 133). F. L. cyanizum (LS Canêz 32423). Bars: 2 mm (A–F).