Hypomyces luteovirens (Fr.: Fr.) Tul., Ann. Sci. Nat., Ser. Bot. IV, 13: 13, 1860.

Teleomorph in nature: Subiculum olivaceous (No.62) to citrine (No.64) covering a

Gill or entire surface of host hymenium; hymenial hyphae 1.5-2.5(-9.0) μm in width, parenchymatous, septate, thick-walled, and KOH (-).  Perithecia olivaceous (No.62), subglobose, (350-)400-480 × (350-)400-430(-530) μm, born in groups immersed in the mycelia; papilla conical, (80.0-)100-170 × 250-300(-380) μm.  Asci cylindrical, (210-)225-285(-325) × 5.0-7.5(-9.0) μm, 8-spored, with a stalk 50.0-80.0 μm long, forming a pore at the slightly thick-walled apex, 3.0-5.0μm in long.  Ascospores hyaline, fusiform, aseptae, (32.5)40.0-45.0(-47.5) × (5.0-)7.0-7.5μm, with minute warts, apiculate at both ends; apiculi (3.0-)7.5(-12.5) μm long. 

Specimen examined:

On the fruiting bodies of Russula sp., collected in Yamanashi Pref., Japan, on 1999.8.15. by Akito Koyama (specimen： KPM-NC0006518).

References

Anonymous. 1969.  Flora of British fungi colour identification chart.  Edinburgh her majesty's stationery office, Royal Botanic Garden, Edinburgh.

Tokiwa T, Okuda T (2001) Japanese fungicolous ascomycetes, three Hypomyces species.  Nippon Kingakukai Kaiho 42: 199-209 (in Japanese)