Mycena ustalis , a new record for the mycobiota of Turkey

The small agaric, Mycena ustalis Aronsen & Maas Geest. (Mycenaceae), is given as new record from Turkey. The macro and micromorphological photographs of the species and a brief description of the species are provided.


Introduction
Mycena (Pers.)Roussel is a genus in the family Mycenaceae Underw.Members of the genus have cosmopolitan distribution, and play a vital role in litter decomposition since the majority of them are saprotrophic (Pegler, 1986;Singer, 1986).Kirk et al. (2008) reports the existance of almost five hundred Mycena species in the world.
The study aims to make a contribution to the mycobiota of Turkey.

Materials and Method
Basidiomata of M. ustalis species were collected from Of district of Trabzon province in 2017.During field studies, the ecological characteristics of the fruit bodies were recorded and macro photographs of them were taken at their natural habitats.Carrying the samples to the fungarium, they were dried in an air conditioned room, and prepared as fungarium materials in polyethylene bags.Dry materials were used for microscopic investigations.A Leica DM500 trinocular compound microscope was used for micromorphologic measurement and investigations.By comparing the obtained macromorphological and micromorphological data with Aronsen and Maas Geesteranus (1989) and NBIC (2018), identification of the specimens were performed.The samples are kept at the fungarium of Van Yüzüncü Yıl University in Van, Turkey (VANF).

Mycena ustalis Aronsen & Maas Geest.
Macroscopic features: Pileus 9-38 mm across, conical to campanulate when young, broadly convex to applanate at maturity, slightly umbonate, surface smooth to very finely fibrillose when young, somewhat sulcate when mature, especially towards the margin, dark blackish to bluish brown when young, brown when mature, darker at the center, paler toward the margin.Margin whitish when young, brownish when mature.Flesh thin, odor and taste not distinctive.Lamellae adnate to uncinate, white when young, dark grey to pale grey at maturity.Stem 35-70  3-4 mm, cylindrical to somewhat compressed, slighthly curved and widened towards the base, almost concolorous with the pileus or darker, especially when mature, white puberulous when young, puberules paler to brownish at maturity (Fig. 1).
Ecology: Mycena ustalis was reported to grow in grass near or on needles of Juniperus L. (Aronsen and Maas Geesteranus, 1989).

Discussions
Mycena ustalis is a member of the section Fragilipedes (Fr.) Quél.(Aronsen and Maas Geesteranus, 1989).The macro and micromorphological characters of the determined sample, generally conforms thoose investigated by Aronsen and Maas Geesteranus (1989).Habitat of the sample is also similar, except the existance of Cupressus species beside the Juniperus species.
Though Aronsen and Maas Geesteranus (1989) mentions about a nitrous odor of M. ustalis, we could not observe a distinct odor from our Turkish collection.
Morphologically, M. leptocephala (Pers.)Gillet is similar to M. ustalis as having dark blackish brown pileus and stem, but differs from the latter species by growing among needle litter under conifers.