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Page number:342 
Remarks (internal):Cribb (1958) tended to follow Cunningham in placing all the round spored species of the Hymenogastraceae in either Octaviania or Hydnangium. Smith (1962) transferred this species to Martellia because of the amyloid reaction of the spore ornamentation. However, Macowanites tomentosa is considered to be a member of the genus Macowanites and not a Gymnomyces as it consistently has a stipe-columella, more complicated peridiopellis, and hymenophoral cystidia (Lebel and Trappe 2000 ).
Microscopically this collection resembles Gymnomyces pallidus. The spore ornamentation of Macowanites tomentosa closely matches that of G. pallidus, though the warts are more abundant with fewer connections between elements, and the spores are, on average, slightly larger. Macowanites tomentosa has a distinctly filamentous peridiopellis and the hymenophoral cystidia are dimorphic, not a short turf of hyphal tips and cystidia and monomorphic hymenophoral cystidia as in Gymnomyces pallidus. Macroscopically these two species differ in the presence of a stipe-columella in M. tomentosa and lack of such in G. pallidus.
 
Description type:Non-original description 
Description:Hydnangium tomentosum J.W. Cribb, Univ. Queensland Dept. Bot. Pap. 3:251. Fig. 9 . 1958.
Martellia tomentosa (J.W. Cribb) A.H. Sm., Mycologia 54:631. 1962.
Macowanites tomentosa (J.W. Cribb) T. Lebel et Castellano comb. nov.
Illustrations of type material. Pegler and Young (1979)
Basidiomata up to 15 mm in diam, subglobose. Peridial surface tomentose, ochraceous. Gleba white becoming pale brown, loculate, locules labyrinthiform, up to 1 mm in diam, empty. Stipe either 1-5 x 1-2 mm, solid, off-white, vestigial, or reduced to basal pad. Columella absent or present, rudimentary, concolorous with gleba. Odor and taste not recorded. Latex not recorded. Peridiopellis 10-90 µm wide, a tangled trichodermium of upright to collapsed, septate, rarely branched, hyaline to brown hyphae 12-32 x 3-6 µm, the terminal cells sometimes inflated, fusoid or clavate with obtuse or mucronate apices, with pigmented granular contents orange brown in KOH which may be agglutinated, repent in older specimens, and an underlying gelatinized layer, 15-25 µm wide, of hyaline hyphae 2-4 µm in diam, the cells appearing ± isodiametric. In younger basidiomata, the peridiopellis a hymeniform turf of tightly packed clavate to cylindrical cells 25-35 x 3-7 µm, with an overlying gelatinous layer 12-18 µm thick. Peridial context 70-200 µm wide, of interwoven, hyaline to pale brown hyphae 2-3.5 µm in diam, with abundant straight to sinuous, refractive hyphae 2-7 µm in diam, some of which extend into the peridiopellis, and scattered nests of sphaerocysts 12-25 µm in diam. Endocystidia absent. Stipitipellis 9-15 µm wide, a turf of hyphal tips 2-4 µm in diam and scattered, inflated, fusoid or ventricose cystidia 8-11 x 3-6 µm, with obtuse or acute apices. Columella context when present, of interwoven, hyaline hyphae 2-3 µm in diam and sphaerocysts 12-22 µm in diam in scattered nests. Hymenophoral trama 35-82 µm wide, of densely packed, interwoven, hyaline hyphae 2-4 µm in diam, scattered inflated elements 4-6 µm in diam, sinuous refractive hyphae 2-6 µm in diam and a few sphaerocysts 13-27 µm in diam in scattered nests; subhymenium not rehydrating well, 14-26 µm wide, with 1-2 tiers of isodiametric cells 6-10 µm in diam. Clamp connections absent from all tissues. Basidia 24-36 x 7-13 µm, hyaline, cylindrical to clavate, with 4 (-2) sterigmata 5-7 x 1-1.5 µm (not rehydrating well). Cystidia dimorphic, the most abundant 22-34 x 4-9 µm, cylindrical or fusoid-ventricose with mucronate or obtuse apices and some refractive granular content or oily contents golden in KOH, arising in trama and subhymenium, but rarely extending beyond basidia; rarer, 29-80 x 10-18 µm, clavate or cylindrical with obtuse apices and some granular refractive contents, arising in the subhymenium, protruding well past basidia. Spores 8.5-10 x 8-9.5 µm (9.4 ± 0.25 x 8.8 ± 0.5, n = 35), Q = 1.04-1.08, globose to subglobose, orthotropic and symmetrical, hyaline. Ornamentation irregularly amyloid, of abundant, isolated warts and truncate rods or spines, 0.5-1 µm high, irregular in shape, size and height, often slightly curved, rarely the bases of 1-2 elements coalescing. Hilar appendix 1-1.5 x 1-1.5 µm, central, tapering; plage absent. Spores in mass off-white to pale brown when dried.
Etymology. Derived from the latin word tomentosus, meaning 'densely interwoven hair covering', referring to the tomentose peridium.
Specimen examined: AUSTRALIA. QUEENSLAND: Lamington National Park, "in leaf mould", 22 March 1952, J. Herbert, PDD 12329 (ISOTYPE: PDD).
 
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