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Page number:84 
Remarks (internal):The cristate aculei, capitate and acute leptocystidia and ellipsoid basidiospores measuring 4.5-6 x (3-)3.5-4.5 pm distinguish H. spathulata from other species of Hyphodontia. 
Description type:Non-original description 
Description:Hyphodontia spathulata (Schrader: Fries) Parmasto, Consp. Syst. Cort., 123, 1968.
(Fig. 60)
? Hydnum spathulatum Fr., Syst. Mycol. 1: 423, 1821.
? Odontia spathulata (Schrad.: Fr.) Litsch., À–sterr. Bot. Zeitschr. 88: 125, 1939.
Distribution: Africa, Asia [China (Hjortstam and Ryvarden, 1988), India and Nepal (Rattan, 1977), Iran (Hallenberg, 1981b), Japan (Aoshima and Furukawa, 1966)], Europe, and North and South America.
Basidiomata resupinate, adnate, effused; hymenial surface pale yellowish white, "Buff", "Pale Luteous" to "Ochreous", odontoid, sometimes cracked when dry; aculei 5-15 per mm2, at first conical to subcylindrical and then frequently becoming cristate by connecting with each other, up to 1 mm in length, sometimes fimbriate at the apex under the lens (x 20); margin concolorous with the hymenial surface, thinning out, sometimes pruinose under the lens (x 20). In vertical section, subhyaline, submembranous. Hyphal system monomitic; hyphae 2-4 µm in diam, smooth, thin- to slightly thick-walled (up to 0.5 µm), nodose-septate, loosely intertwined in the subiculum; capitate leptocystidia 20-50 x 4-5.5 µm, with a basal clamp, smooth, thin-walled; acute leptocystidia slightly sinu­ous, 20-30 x 4-5 µm, with a basal clamp, smooth, thin-walled; basidia narrowly clavate to cylindrical with a slightly median constriction, 12-23(-35) x 4-5 µm, with a basal clamp, producing 4 sterigmata; basidiospores ellipsoid, 4.5-6x (3-)3.5-4.5 µm, smooth, thin-walled, non-amyloid.
 
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