Fruitbodies two. Pilei 2 - 3.5 x 0.3 - 0.5 cm, smooth, uninterrupted, light gold. Stipe 5 - 5.2 x 0.2 - 0.4 cm, equal to subobclavate, concolorous with pileus, smooth. Pileus cuticle an interwoven ixotrichodermium; terminal cells 2.5 - 6.5 µm diam. (d^m = 4 µm), hyaline in KOH, yellow in Melzer's. Tube trama, hyphae 2.5 - 8 µm diam. (d^m = 8 µm), boletoid, hyaline in KOH, yellow in Melzer's. Clamp connections absent. Basidia 30 - 43 x 10.5 - 13 µm (D^m = 32.5 x 11.5 µm), thin-walled, clavate, hyaline in KOH, yellow in Melzer's. Pleurocystidia absent; cheilocystidia 19.5 - 47 x 4 - 8 µm (D^m = 34 x 6.5 µm), thin-walled with a few becoming thick-walled, equal, hyaline in KOH, yellow in Melzer's, abundant (Fig. 7); caulocystidia 26 - 39 x 5 - 9 µm (D^m = 31 x 8 µm), thin-walled, equal to clavate, hyaline to pale yellow in KOH, yellow in Melzer's. Spores 14 - 19.5 x 4 - 5 µm (D^m = 17 x 5 µm; E = 2.8 - 5.0; E^m = 3.5), elliptical to subfusiform, inequilateral by a shallow suprahilar depression and adaxial swelling, pale yellow-cinnamon with green refractile inclusions in KOH, yellow-rust (pale dextrinoid) in Melzer's; surface smooth, walls continuous, surrounded by a hyaline membrane (Fig. 8); in deposit "Russet", light brown.

Type specimen (holotype):PDD -25184; on ground under Nothofagus menziesii; Otago District, Catlins, Puketiro Reserve; 29.iii.1966; coll and det. R.F.R. McNabb [!]

Fruitbody one. Pileus 2 x 0.4 cm, light yellow-brown, continuous, glabrous. Hymenium rust-brown. Stipe 4 x 0.3 cm, equal, smooth. Pileus cuticle a palisade ixotrichodermium; terminal cells 4 - 6.5 µm diam. (d^m = 6.5 µm), equal, hyaline in KOH, yellow in Melzer's. Tube trama hyphae 2.5 - 8 µm diam. (d = 5 µm), boletoid, hyaline in KOH, yellow in Melzer's. Clamp connections absent. Basidia (19.5-) 26 - 34 x 8 - 10.5 µm (D^m = 30 x 9 µm), thin-walled, clavate to narrowly clavate to subequal, hyaline in KOH, yellow in Melzer's, some with a slight central constriction (Fig. 12). Pleurocystidia 52 - 65 x 13 - 17 µm (D^m = 58.5 x 13 µm), thin-walled, broadly fusoid ventricose, hyaline in KOH, yellow in Melzer's, rare (Fig. 13); cheilocystidia 23.5 - 37.5 x 5 - 9 (-11.5) µm (D^m = 32.5 x 8 µm), thin-walled, equal to subventricose to clavate, hyaline in KOH, yellow in Melzer's, in chains of 2 - 3 cells (Fig. 14); caulocystidia (19.5-) 26 - 35 (-39) x 5 - 8 µm (D^m = 30 x 6.5 µm), thin-walled, clavate, yellow in KOH, gold in Melzer's, some with a thick refractile apex. Spores 13 - 18 (-21) x 4 - 6.5 µm (D^m = 17 x 5 um; E = 2.8 - 3.7; E^m = 3.2), fusoid,inequilateral by a distinct suprahilar depression and adaxial swelling, pale ochraceous green in KOH, pale yellow-rust (sub dextrinoid) in Melzer's (Fig. 15); surface smooth (Fig. 21), walls continuous, surrounded by a hyaline membrane.

Observations. The violet pallid color of the hymenophore is characteristic of this taxon. Since it belongs in the genus Mucilopilus, the following new combination is proposed.
Mucilopilus violaceiporus (Stevenson) Wolfe, comb. nov.
Basionym: Boletellus violaceiporus Stevenson. 1962. Kew Bull. 15(3): 384.

Type specimen (holotype): K - "Herb. Hort. Bot. Reg. Kew; Maitai, New Zealand; G.B.C. 1060; 29.4.1956." [!]

Fruitbodies two. Pilei 0.8 - 3.0 x 0.3 - 0.5 cm, vinaceous brown to yellow-brown, glabrous, appears to have been viscid when fresh. Stipe 1.8 - 3 x 0.3 - 0.6 cm, obclavate, khaki overall, faintly reticulate at the apex only. Pileus cuticle an interwoven ixotrichodermium; terminal cells 4 - 6.5 µm diam. (d^m = 4 µm), equal to subclavate, hyaline in KOH, yellow in Melzer's. Tube trama hyphae 4 - 9 µm diam. (d^m = 6.5 µm), hyaline in KOH, yellow in IKI. Clamp connections absent. Basidia 23.5 - 36.5 x 9 - 13 µm (D^m = 28.5 x 10.5 µm), thin-walled, clavate, 2 - 4 sterigmate, hyaline.in KOH, yellow in Melzer's. Pleurocystidia 43 - 58.5 x 8 - 9 µm (D^m = 56 x 9 µm), narrowly fusoid-ventri cose, hyaline in KOH, yellow in Melzer's (Fig. 16); cheilocystidia 24.5 - 54.5 x 6.5 - 10.5 µm (D^m = 41.5 x 8 µm), equal to subclavate, hyaline to pale yellow-tan in KOH, yellow in Melzer's, with an occasional distal secondary septum, abundant and clustered around the pores (Fig. 17); caulocystidia 39 - 69 x 6.5 - 9 µm (D^m = 52 x 8 µm), equal to clavate, scattered, pale yellow in KOH, gold-brown to dingy brown in Melzer's. Spores 14.5 - 19.5 x 4 - 5 (-6.5) µm (D^m = 17 x 5 um; E = 2.4 - 4.6; E^m = 3.5), elliptical to fusiform, inequilateral by a broad shallow suprahilar depression and adaxial swelling, yellow green with cinnamon walls in KOH, rust-yellow in Melzer's (Fig. 18); surface smooth, with a small and obscure inner wall discontinuity, surrounded by a hyaline membrane; in deposit "Russet", light brown.

Observations. Wolfe & Petersen (1978) published SEM's of the spores of this specimen which show the spore surface as smooth. Furthermore, the hymenophore at maturity is pallid flesh color. Because this specimen is the type specimen of the type species of the genus Mucilopilus, the following new combination is proposed.
Mucilopilus viscidus (McNabb) Wolfe, comb. nov.
Basionym: Porphyrellus viscidus McNabb. 1967. New Zealand J. Bot. 5(4): 543.

Type specimen (holotype): PDD - "25185; scattered under Leptospermum scoparium/ericoides; Auckland, Kerikeri, Opito Bay; 16.v.1966; R.F.R. McNabb." [!]

Fruitbody one. Pileus 3 x 0.3 cm, surface glabrous, smooth, uninterrupted, appears to have been viscid when fresh, vinaceous brown, pores gelatinized. Stipe 5 x 0.7 cm, obclavate, yellow-tan to khaki with minute pruina scattered over the surface. Pileus cuticle an interwoven ixotrichodermium; terminal cells 2.5 - 5 µm diam. (d^m = 4 µm), equal, hyaline in KOH, yellow in Melzer's. Tube trams, hyphae 4 - 6.5 µm diam. (d = 5 µm), boletoid, hyaline in KOH, yel low in Melzer's, some appearing subgelatinous. Clamp connections absent. Basidia 32.5 - 41.5 x 8 - 10.5 µm (D^m = 35 x 9 µm), thin-walled, clavate, 2 - 4 sterigmate, hyaline in KOH, yellow in Melzer's (Fig. 4). Pleurocystidia 43 - 53.5 x 9 - 12 µm (D^m = 52 x 9 µm), thin-walled, fusoid-ventricose, hyaline in KOH, yellos in Melzers, rare; cheilocystidia 54.4 - 93.5 x 5 - 8 µm (D^m = 65 x 6.5 µm), thin-walled, subclavate to equal, occasionally with a secondary septum, hyaline in KOH, yellow in Melzer's (Fig. 5); caulocystidia 23.5 - 78 x 6.5 - 9 µm (D^m = 39 x 8 µm), thin-walled, equal to obclavate, fasciculate, opaque cream in KOH, yellow in Melzer's, occasionally with a recurved distal end. Spores 15.5 - 24.5 x 4 - 8 µm (D^m = 19.5 x 5 µm; E = 3 - 4.8; E^m = 3.8), elliptical to narrowly elliptical, inequilateral by a narrow suprahilar depression and adaxial swelling, yellow-khaki with green refractile contents in KOH, yellow to yellow-rust (dextrinoid) in Melzer's (Fig. 6); surface smooth (Fig. 19), inner distal wall discontinuity, surrounded by a hyaline membrane; in deposit "Russet", light brown.

Type specimen (holotype): PDD 25186; solitary under Leptospermum ericoides; Auckland; Waitakere Filters; 25.v.1966; R.F.R McNabb. [!]