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Page number:72 
Remarks (public):Hydnum rufescens has variously been regarded as a variety of H. repandum or a species of its own. As is so often the case, points in favour of both views can be found. But against the view of H. rufescens being subordinated as a variety the objection can be raised that as yet there is no proof of any such genetic interrelation. Rather than postulating such a relationship it seems preferable to resort to the conventional method of distinguishing H. repandum and H. rufescens as two separate species. This solution may appeal to many mycologists, but it can hardly be called a satisfactory one, for a closer acquaintance of this repandum/rufescenscomplex over a wider area than dealt with in the present paper (and, more particularly, including southern Europe) would soon reveal that not a single feature, not even the colour of the pileus, can be used as a clear-cut distinguishing character.
Cleland & Cheel (1919: 304) reported the present species from several localities in New South Wales. It remains to be seen, however, whether their material really belongs here, for the size of the spores, recorded as "3.5 to 5.5 µm, spherical to oval," would seem to be far too small.
 
Description type:Non-original description 
Description:Hydnum rufescens Fr., Syst. mycol. 1: 401. 1821; not Hydnum rufescens Schaeff., Fung. Icon. 4: 95. 1774 (=H. repandum, acc. to Fr., 1.c.); not Hydnum rufescens (Pers.) Poiret, Encycl. méth. (Bot.) 8: 206. 1808 (=Heteroporus biennis). - Hydnum repandum var. rufescens (Fr.) Barla, Champ. Prov. Nice xlviii, 81. 1859; Peck in Rep. N.Y. State Mus. 48: 406. 1896. - Hydnum repandum subspec. H. rufescens (Fr.) Fr., Hym. europ. 601. 1874. - Tyrodon repandus subsp. T. rufescens (Fr.) P. Karst. in Revue mycol. 3 / No. 9: 19. Jan. 1, 1881; in Acta Soc. Fauna Fl. fenn. 2(1): 33. 1881 & in Meddn Soc. Fauna Fl. fenn. 6: 15. 1881. - Sarcodon repandus var. rufescens (Fr.) Quél., Ench. Fung. 189. 1886. - Tyrodon rufescens (Fr.) P. Karst. in Bidr. Kann. Finl. Nat. Folk 48: 349. 1889. - Dentinum rufescens (Fr.) Pouz. in Ceská Mykol. 10: 76. 1956; not Dentinum rufescens Schaeff. ex S. F. Gray, Nat. Arrang. Brit. Pl. 1: 650. 1821. - Sarcodon rufescens (Fr.) Heim, Champ. Europe 2: 62. 1957 (incomplete reference to basionym). - Hydnum repandum f. rufescens (Fr.) Nikol. in Fl. Pl. cryptog. URSS 6(Fungi 2): 305. 1961. - TYPE: nonexisting; TYPE LOCALITY: Germany.
For further synonymy, see MAAS GEESTERANUS (1959: 135).
Basidiomes scattered or in small troops, simple or connate. Pileus up to 45 mm across (dry), convex to plane or depressed in the centre, tomentose to felted, glabrescent from centre outwards, varying ochraceous orange-yellow to salmon or orange-brown when fresh, pallescent and duller when dry. Margin at first involute, then straight. Stipe 10-45 x 1.5-10(-15) mm (dry), central to excentric, solid, slender to stocky, cylindrical or flattened, straight or flexuous, finely tomentose to felted, glabrescent, whitish to pale flesh-colour when fresh, staining a deep yellow when bruised, concolorous with the pileus or paler when dry. Spines up to 5 mm long, little or not decurrent, moderately crowded, subulate or flattened to divaricate, salmon. Context fleshy, firm, homogeneous, not zoned, pale flesh-colour, staining yellow when cut.
Context of the pileus monomitic, made up of generative hyphae. Hyphae up to about 20 µm wide, inflating, thin-walled, branched, septate, with clamp-connections. Basidia 36-45 x 8-9 µm, cylindrical-clavate, with 4 sterigmata 5-6 µm long, with basal clamp-connection. Spores 6.3-8.1 x 5.46.3 µm, broadly ellipsoid to subglobose, adaxially somewhat flattened, smooth, colourless, with granular contents or a large oil-drop, with oblique apiculus.

 
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