Hypoxylon bellicolor Cedeño-Sanchez, L. Wendt & L. C. Mejía 2020

Reyes, Pamela E., Pinzón, Juan Pablo, Valenzuela, Ricardo, Raymundo, Tania, Tun-Garrido, Juan & García-Sandoval, Ricardo, 2024, Two new species and a new record of Hypoxylaceae (Xylariales, Ascomycota) from Mexico, MycoKeys 111, pp. 111-127 : 111-127

Hypoxylon bellicolor Cedeño-Sanchez, L. Wendt & L. C. Mejía 2020 Mycosphere 11 (1): 1464 (2020).

Fig. 4

Description.

Stromata effused-pulvinate 20–90 mm long × 10–30 mm wide, Rust (39) (Fig. 4 a ) pruinose surface with rust granules beneath the surface (Fig. 4 b ), KOH-extractable pigments Luteous (12) (Fig. 4 c ); perithecia ovoid, umbilicate ostioles (Fig. 4 d ); asci 8 - spored cylindrical, the spore bearing part 40–80 µm long × 5–6 µm wide, stipes 30–35 µm long, with amyloid, discoid apical apparatus 2–3 µm high × 2 µm wide (Fig. 4 e ); ascospores 10–12 µm long × 4–6 µm wide, with germ slit straight less than spore-length on the convex side, perispore dehiscent in 10 % KOH with coil-like ornamentation (Fig. 4 f ).

Specimens examined.

Mexico • Campeche, Champotón-Campeche highway; 19 Jan 2018; P. Reyes leg.; UADY 145 • Quintana Roo, Centro de Conservación y Educación Ambiental, Cozumel ; 20 Jan 2018; R. Valenzuela leg.; ENCB 17942 • Yucatán, east from the cemetery, comisaría Xmatkuil ; 15 Oct 2021; P. Reyes leg.; UADY 7 • ibid.; P. Reyes leg.; UADY 9 • Southern Ecological Park, Mérida ; 21 Sept 2022; P. Reyes leg.; UADY 45 • Ría Celestún Biosphere Reserve ; 29 Oct 2022; P. Reyes leg.; UADY 55 .

Host.

Growing on dead wood of Lysiloma latisiliquum (L.) Benth. ( Fabaceae ), Lonchocarpus sp. ( Fabaceae ) in deciduous forest; on dead wood of Conocarpus erectus L. ( Combretaceae ) in coastal dune vegetation.

Known distribution.

Panama ( Cedeño-Sanchez et al. 2020).

Notes.

It shares a stromata color and yellow pigments with H. perforatum , however this one is characterized by having a white disc surrounding the ostioles; in addition it has a cosmopolitan distribution ( Ju and Rogers 1996).

Figures

Figure 4. Hypoxylon bellicolor a general view of stromata b pruinose surface c KOH-extractable pigments d perithecia ovoid e asci f perispore dehiscent 10 % KOH with coil-like ornamentation.