Hydnum quebecense Niskanen & Liimat., Mycologia 110: in press (2018)

Swenie, Rachel A., Baroni, Timothy J. & Matheny, P. Brandon, 2018, Six new species and reports of Hydnum (Cantharellales) from eastern North America, MycoKeys 42, pp. 35-72 : 35

Hydnum quebecense Niskanen & Liimat., Mycologia 110: in press (2018) Fig. 5K

Type.

CANADA. Québec: Saint-Donat (46.3000; -74.2000), in conifer-dominated forest ( Tsuga , Abies , Picea , Betula , and Populus ), 5 Sep 2010, anonymous, T. Niskanen 10-064 (holotype H7043948, isotype K(M)248983, isotype NY).

Description.

Pileus 2-20 mm wide, round or sometimes irregularly so, convex, apex sometimes depressed or umbilicate, surface dry, tomentose or velutinous, tan orange-brown to warm reddish-brown; margin incurved, becoming decurved and wavy. Spines 1-2 mm long, adnate when young, subdecurrent with age, cream-white to peach. Stipe 15-45 × 3-10 mm, central, equal to subclavate, glabrous to minutely velutinous, cream white to very light buff orange, staining buff orange when handled. Context solid, cream to tan. Odor and taste mild.

Basidiospores 8 –8.4– 9.5 μm × 7 –7.8– 9 μm, Q=1.00 –1.09– 1.28 (n=19/2), globose to subglobose, smooth, hyaline in KOH. Basidia 40-51 × 7-8 μm with 2-3 sterigmata. Pileipellis an interwoven cutis, hyphae smooth, cylindrical, thin-walled, hyaline, mostly 5-8 μm wide. Clamp connections present.

Distribution.

Eastern U.S. and eastern Canada - New York, Quebec (type, GenBank KX388662).

Ecology.

In moss, especially Sphagnum , under Fagus and Picea . July.

Other specimens examined.

UNITED STATES. New York: Hamilton County, Raquette Lake, Long Point, Blue Mountain Trail, in moss under Fagus grandifolia , 550 m, 25 Jul 2001, J. D’Apice 49JD (CORT 7367). Hamilton County, Raquette Lake, Silver Beach Bog, in Sphagnum , 550 m, 22 Jul 1997, J. Guardino JG003 (CORT 7330). Hamilton County, Raquette Lake, Silver Beach Bog, in Sphagnum , 550 m, 23 Jul 1988, C. Nelson CN9 (CORT 7365). Hamilton County, Raquette Lake, Silver Beach Bog, in Sphagnum under Picea , 550 m, 26 July 1993, K. Hodge KH7 (CORT 7322).

Discussion.

This species is closely related to H. umbilicatum but is characterized by the apparent habitat preference for Sphagnum bogs. The holotype from Quebec (KX388662) was described among Sphagnum in association with conifers and northern hardwoods (mainly Picea , but also Tsuga , Abies , Betula , Populus ).