Hyphodontia hariotii (Bres.) Parm., Consp. Syst. Cort. p. 122. 1968.
Description：
Macroscopic characters: Basidiocarps resupinate, effused, adnate, 80–170 μm thick, 0.7–2 × 2–8 cm, cretaceous to pelliculose, cracked strongly, pruinose, downy in appearance, even, white, chalk-white to light buff (NTU-2651, 4285), cartridge buff (NTU-4283), not chang-ing color in 5% KOH or slightly turning pale yellow in 5% KOH; margins thining out, floccose to tomentose, white or concolorous.
Microscopic characters: Without basal layer of context or with a few parallel hyphae at base of context; context composed of longitudinally loosely interwoven hyphae; hyphae distinctive, 2–4 μm wide, thin-walled, smooth, with large clamp connections, gradually densely arranged from base towards subhymenium; cystidia cylindrical, attenuate upwards, but abruptly swelling at tips in globose shape, thin-walled, smooth, aseptate, sometimes encrusted but the crystals dissolved in KOH, with the capitate tip 3 μm in diam., or 3.5 × 4 μm , with the neck 1.5–2 × 2–5 μm, with the lower portions 5 × 12–35 μm, sometimes with clamp connections at base, mostly protruding 12–22 μm high; hymenial layer even, compactly arranged, 25–35 μm thick; basidia subclavate to cylindrical or subutriform to slightly constricted at middle portions, 3.2–5 × 10–30 μm, with 2–4 basidiospores; sterigmata slender, 1–1.2 μm wide at base, 3–5 μm long, straight; basidiospores ellipsoid, oval, 4 × 6 μm , smooth, thin-walled 1-guttulate, apiculate non-amyloid.
Specimens：
Kaohsiung Hsien, the Southern Cross-Island Highway, Tutsang, under the conifer and hardwood mixed forests, alt. 2600 m, Jan. 1975, S.-H. Lin (NTU-2651); Yaco, in the open area, on the trunks of Taiwan red pine, alt. 2600–3550 m, Jan. 25, 1975. S.-H. Lin (NTU-2694); Taipei Hsien, Wulai Hsiang, Doll Valley, on the road side, under the hardwood forests, alt. 300–400 m, Dec. 25, 1975, S.-H. Lin (NTU-4283, 4285).
Habitat：
On dead branches of the broad-leaved trees and the barks of Taiwan red pine (NTU-2694), Pinus taiwanensis Hayata.
Distribution：
Europe, North America, New Zealand, Kamchatka Peninsula, Japan and Taiwan.
References：
Lin, SH and Chen, ZC 1990.
Provided：
S. H. Lin
Note：
The cystidial form is a good mark of this species. In addition to it, the ovate spores, the strongly cracked and chalky basidiocarps are also of the important associated features. The species seems to be very similar to Odontia pelliculae Furukawa in the cystidial shape, spore shape, hyphae and the texture of the context except the latter species having odontoid spines and smaller basidiospores.
Phylum：Basidiomycota >> Class： Basidiomycetes >> Order： Agaricales 
BCRC Number：