Trichoglossum jejuense S. H. Lee, 2021

Lee, Seung-Hak, Ko, Pyeung-Yeul, Koh, Ki-Beom, Jun, Yong-Woo, Kim, Young-Jin, Jung, Yong-Hwan, Yoon, Weon-Jong & Oh, Dae-Ju, 2021, A new species of Trichoglossum (Geoglossales, Ascomycota) from South Korea, Phytotaxa 527 (2), pp. 117-124 : 119-121

Trichoglossum jejuense S. H. Lee , sp. nov. Fig. 3–5

MycoBank: MB836098; GenBank: MT741783

Etymology: — The specific epithet jejuense refers to the collection site in Jeju Island.

Holotype: — KOREA. JEJU. SEOGWIPO: Leeseungak, on soil (33.337177, 126.626613), 30 July 2019, S. H. Lee , JBRI-M19-946 .

Diagnosis: — This species can be distinguished from other Trichoglossum species by thick, 8-spored asci, and 15–16 septate ascospores.

Description: — Ascomata 30.53–42.35 mm long, clavate, dry, and black ( Figs. 3 and 4A ). Fertile heads 4.28–7.16 × 2.23–4.20 mm, distinctly separated from the stipe, globose to spathulate, black, densely setose ( Fig. 4C and 4D ). Sterile stipes 25.79–37.65 × 0.51–1.31 mm, cylindrical, slender, straight or curved, tapered at the base or equal, concolorous with fertile head, densely setose, and tough ( Fig. 4B ). Asci 186–254 × 23–31 µm, oval, rounded at the tip, with eight spores parallel in each ascus ( Fig. 5A ). Ascospores 109–182 × 6–8 µm, cylindrical, rodlike, rounded at the tip, with 15–16 septa ( Fig. 5B ). Paraphyses 2–8 × 131–189 µm, filiform, widely divided by septa, somewhat curved at the tip, sometimes branched ( Fig. 5C ). Setae 9–19 × 247–335 µm, tapered at the tip, pointed or rounded, and black ( Fig. 5D ).

Habitat: — The new species spreads by scattering on the soil. Leeseungak, the collection site for the new species, is covered by both evergreen and deciduous broad-leaved trees. Notably, deciduous broad-leaved trees dominated the sampling spot.

Distribution: — Only recorded in South Korea.

Figures

FIGURE 3. Fruiting bodies of Trichoglossum jejuense in the field. A-B. Ascomata of holotype specimen JBRI-M19-946 on soil (Scale bars:A, B = 3mm).

FIGURE 4. Close-up images of Trichoglossum jejuense. A. Ascomata. B. Sterile stipe. C-D. Fertile head of holotype specimen JBRI- M19-946 (Scale bars: B, C, D = 1mm).

FIGURE 5. Microscopic images of Trichoglossum jejuense. A. Ascus. B. Ascospores. C. Paraphyses. D. Seta (Scale bars: A, B, C = 20 µm; D = 40 µm).