Search on : Taxa descriptions


Page number:88 
Remarks (internal):HARRISON (1968: 232), discussing "H. auratile Britzelmeyer," advocated against its use because ". . . the type of H. auratile has not been found and in our experience it is unwise to identify any species in the Hydnellum aurantiacum complex without specimens."
This I feel obliged to counter with the following remarks. The correct spelling of the name of the author of Hydnum auratile is Britzelmayr, not Britzelmeyer. This author gave a description and an illustration of a fungus which in Europe, a continent poor in specific diversity, cannot be mistaken.
It is true that Britzelmayr was the author of a great many unnecessary names, but some of his species have received, and do merit, recognition, Rhodophyllus aprilis (Britz.) Romagn. and Russula paludosa Britz. being a few among the Agarics, and the present species being one of the Aphyllophorales. Identification of species published in earlier times is one of the occupations of the taxonomist. To disdain the value of this kind of work is certain to lead to several more unnecessary names. To dismiss, in a particular case, the outcome of painstaking research, would seem only capable of being explained by complete ignorance of European conditions.
If it is thought unwise to identify any species in the H. aurantiacum complex without specimens, one might just as well abolish the very name Hydnum aurantiacum. The type of this species is represented by the description and illustration given by Batsch since there is no material, and some benevolence is certainly required to recognize the species from the illustration
Description type:Non-original description 
Description:HYDNELLUM AURATILE (Britz.) Maas G.-Figs. 118-120, Pl. IV, fig. 2
Basidiomes closely grouped or coalescent to form complex groups. Pileus up to 50 mm across, entire or deeply slit, simple or proliferating, depressed to infundibuliform, also more or less flabelliform, comparatively smooth to radiately uneven or rugulose and, besides, concentrically zoned with few to several shallow depressions, at first finely plushy, then tomentose to radiately fibrillose, nearly always marked by radiately aligned, dark brown to blackish innate to raised fibrils which unite to form slender streaks or scale-like threads, infrequently also becoming locally matted and shiny, the centre smooth to rough or scrupose; pale sulphur yellow in the youngest stage, then orange or of a vivid orange-brown, finally dark red-brown, with few and vague colour zones or closely zoned with bands of contrasting colours; margin undulate when dry. Stipe 10-40 x 2-7 mm, usually enlarged below into a bulbous base up to 12 mm broad, plushy to tomentose, becoming matted to glabrous, passing from orangeyellow or orange-brown to dull reddish brown. Spines up to 4 mm long, decurrent, crowded, subulate, pallid, soon turning tawny to purplish brown. Context of the pileus not duplex, obscurely zoned, dingy yellow, becoming dingy yellow-brown, under the upper surface and over the spines bright orange-brown; context of the stipe very little duplex, even in the base, orange-brown. A thin slice of the orange context immediately staining dark olive green in KOH solution.
Context of the pileus monomitic. Generative hyphae 2.7-5 µm wide, not inflating, thin-walled or with slightly thickened cell-walls, branched, septate, without clamp-connections. Context of the spines similar. Basidia 26-31 x 7-8 µm, clavate, without basal clamp, 4-spored. Sterigmata 3.6-4.5 µm long. Spores 5-5.4 x 3.6-4 µm, of irregular outline, tubercular (tubercles fairly numerous, prominent, flat-topped to exsculpate), brownish, with oblique apiculus.
Taxon name: