Terfezia grisea Bordallo, V. Kaounas & Ant. Rodr., 2015

Bordallo, Juan-Julián, Rodríguez, Antonio, Kaounas, Vasileios, Camello, Francisco, Honrubia, Mario & Morte, Asunción, 2015, Two new Terfezia species from Southern Europe, Phytotaxa 230 (3), pp. 239-249 : 241-245

publication ID	https://doi.org/ 10.11646/phytotaxa.230.3.2
persistent identifier	https://treatment.plazi.org/id/C6576D6D-F448-FF9F-AEC4-AC06FDE6A6A1
treatment provided by	Felipe
scientific name	Terfezia grisea Bordallo, V. Kaounas & Ant. Rodr.
status	sp. nov.

Treatment

Terfezia grisea Bordallo, V. Kaounas & Ant. Rodr. View in CoL , sp. nov. Fig. 2 View FIGURE 2

MycoBank 810936

Type:— GREECE, Attica, Schinias, 12 April 2011, leg V. Kaounas (Holotype, MUB Fung-j388).

Ascomata hypogeous to partially emergent at maturity, solitary, 1–2.5 cm in size, tuberiform, subglobose, often conical sterile base, initially pale rusty, in places spotted whitish, later brown, rusty or ochraceous brownish, in places blackish brown to almost black, smooth (fig. 2 A –D). Peridium not separable from gleba, 200–400 μm thick, poorly delimited, pseudoparenchymatous, composed of subglobose cells, hyalines and thin-walled in the innermost layers, yellowish and with thicker walls in the outermost layers. Gleba solid, fleshy, succulent, whitish with greyish pockets at first ( Fig. 2 A&B View FIGURE 2 ), maturing to blackish gray pockets of fertile tissue separated by whitish, sterile veins ( Fig. 2 C&D View FIGURE 2 ). Faint odour, no distinctive. Mild taste.

Asci inamyloid, subglobose to ovate, sessile or short-stipitate, 60–80 x 40–60 μm, walls 1 μm thick, with 6–8 irregularly disposed spores, randomly arranged in the gleba. Ascospores globose, (18–)19–21(–22) μm diam (mean= 21 μm) including ornament, (15–)16–17(–18) μm (mean= 16 μm) without ornament, hyaline, smooth and uniguttulate at first, by maturity yellow ochre and ornamented with conical, sometimes truncated, separate, blunt spines, 2–3 μm long, 1–2 μm wide at the base ( Fig. 2 E&F View FIGURE 2 ).

Ecology and Distribution:—alkaline, sandy soils, in a coastal pine forest in Greece, in grassland areas without trees in Spain, associated with Helianthemum spp ., from March to June in Spain, March to April in Greece.

Etymology:—referring to its grey appearance gleba.

Additional collections examined:— GREECE: ATTICA, Schinias, 2009, V. Kaounas (MUB Fung-j386). Same locality, 2013, V. Kaounas (MUB Fung-j389); 2014, V. Kaounas (MUB Fung-j476). SPAIN: CASTILLA Y LEÓN, BURGOS: Llano de Bureba, 2013, F. Sáinz (MUB Fung-j327); Solduengo, 2013, F. Sáinz (MUB Fung-j485).

Notes:— Terfezia grisea is a spiny-spored Terfezia species characterized by its ochraceous brownish, almost black peridium, blackish gray gleba and growing in alkaline sandy soils associated with Helianthemum spp . T. albida and T. olbiensis also grow in alkaline but clayey soils. Moreover, T. albida , although associated with Helianthemum spp ., has larger ascomata, white peridium, grayish green gleba and spermatic odour. And for its part, T. olbiensis has larger ascomata and smaller spores than T. grisea ( Table 2). In addition, the phylogenetic analysis distinguished the new taxon from the other species ( Fig. 1 View FIGURE 1 ).