VIRTUAL MYCOTA: NZ Fungi Identification: Entoloma melanocephalum

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Entoloma melanocephalum

Synonyms

Entoloma decolorans
Entoloma rubromarginatum
Leptonia decolorans

Biostatus

Present in region - Indigenous. Non endemic

Images (click to enlarge)


Caption: Entoloma decolorans Hk. (holotype): a. carpophores. b. spores. c. cheilocystidia. d. cuticle.	Caption: 68/167: Entoloma decolorans Owner: Egon Horak	Caption: scale = 10um. Spores and chained, cylindrical cheilocystidia. Owner: J.A. Cooper	Owner: J.A. Cooper
Caption: Dried type specimen Owner: Herb PDD	Owner: J.A. Cooper	Caption: basidia spores and cheilocystidia (KOH) Owner: J.A. Cooper	Caption: section through cap surface. Owner: J.A. Cooper
Caption: FUNNZ2007/0497 Owner: FUNNZ	Caption: 68/236: Rhodophyllus melanocephalus Owner: Egon Horak	Caption: ZT8262: Entoloma melanocephalum Owner: Egon Horak	Caption: Entoloma melanocephalum Stev. (holotype): b. spores. (Herb. Hk. 68/181): a. carpophores. c. spores. d. cheilocystidia. e. cuticle.
Owner: Herb. PDD	Caption: Entoloma melanocephalum Owner: Kaimai Bush	Caption: ZT69-169: pdd 88681: Entoloma melanocephalum Owner: Egon Horak	Caption: Watercolour Owner: G.M. Taylor
Caption: ZT9382: NZ116=9382: Entoloma melanocephalum Owner: Egon Horak	Caption: Entoloma rubromarginatum Hk. (holotype): & carpophores. b. spores. c. cheilocystidia. d. cuticle.	Caption: Dried type specimen Owner: Herb PDD

Article: Horak, E. (1973). Fungi Agaricini Novazelandiae I-V. Beihefte zur Nova Hedwigia 43: 200 p.
Description: Pileus 6-20 mm diam., hemispherical or convex when young becoming depressed or umbilicate at the centre, margin incurved, deep blue, covered by black or concolorous squamules or fibrils, dry, not striate. Lamellae (L 8-15, 1 1-3) adnexed or adnate, sometimes subdecurrent with short tooth, whitish at first, turning pink, gill edge concolorous and not fimbriate. Stipe 20-50 x 1-3 mm, cylindrical, slender, blue, with white weft of mycelium at the base, glabrous, dry, fistulose. Context blue underneath the cuticle. Odor and taste not distinctive or slightly farinaceous only.
Spores 9-11.5 x 6.5-8 µm, 5-6-sided. Basidia 25-30 x 10 µm, 4-spored. Cheilocystidia consisting of fasciculate chains of cylindrical cells, terminal cells clavate or cylindrical (15-75 x 6-10 µm), pigment absent. Pleuro- and caulocystidia absent. Cuticle a cutis of suberect, fasciculate, cylindrical hyphae (4-10 µm diam.), membrane thin-walled, not gelatinized, with grey, plasmatic pigment. Clamp connections absent.
Habitat: On soil in forests (under Nothofagus spp., Podocarpus spp., Dacrydium cupressinum). New Zealand.

Article: Horak, E. (1973). Fungi Agaricini Novazelandiae I-V. Beihefte zur Nova Hedwigia 43: 200 p.
Description: Pileus 20-50 mm diam., convex or campanulate with distinct umbilicus or at least depression at the centre, margin incurved and striate, dark brown-blue or black-blue, velvety or finely squamulose all over, dry, not hygrophanous. Lamellae (L 12-20, 1-7), emarginate and slightly decurrent with short tooth, greenish-bluish when young, turning pinkish-blue or pinkish-brown, gill edge fimbriate and blue coloured. Stipe 25-55 x 2-4 mm, cylindrical or attenuated upwards, curved, sometimes eccentric, blue or greenish-blue at the apex, bluish-green or bluish-olive towards the base which is often covered with the white weft of mycelium, dry, stuffed or fistulose, glabrous. Context blue, greenish-blue at the base. Chem. reactions: HCl on pileus - lilac, KOH - negative. Odor and taste not distinctive.
Spores 9.5-11 x 6.5-8.5 µm. 5-6-angled. Basidia 32-50 x 10-12 µm, 4-spored. Cheilocystidia 35-80 x 7-18 µm, clavate or cylindrical, thin-walled, with bluish plasmatic pigment, dense clusters forming the sterile zone at the gill edge. Pleuro- and caulocystidia none. Cuticle a trichoderm of suberect or erect, clavate hyphae (terminal cells 35-80 x 15-20 µm), apically rounded membrane thin-walled, not gelatinized, with blue plasmatic pigment. Clamp connections absent.
Habitat: On soil (under Beilschmidia tawa, Nothofagus spp., Podocarpus spp.) or on rotten wood or debris (of Nothofagus spp. and Dicksonia spp.). New Zealand
Notes: This species is characterized by its green-blue stipe (the colour may fade in aged specimens but is still recognisable in the context of the stipe), the blue coloured gill edge and the large spores.

Article: Horak, E. (1973). Fungi Agaricini Novazelandiae I-V. Beihefte zur Nova Hedwigia 43: 200 p.
Description: Pileus 12-25 mm diam., convex to umbilicate, central depression distinct, beige or bluish-grey, densely covered with fuligineous or dark blue squamules, especially around the centre, margin strongly striate, hygrophanous, membranous. Lamellae (L 8-12, 1 3-4) emarginate, with red coloured, fimbriate gill edge. Stipe 20-35 x 1-2 mm, cylindrical, blue, with white weft at the base, smooth, fistulose. Odor and taste not distinctive.
Spores 10-12 x 7-8 µm, 5-6-angled. Basidia 24-30 x 9 µm, 4-spored. Cheilocystidia 40-95 x 5-14 µm, clavate, thin-walled membrane, with brown plasmatic pigment. Pleuro- and caulocystidia none. Cuticle a cutis or loose trichoderm of suberect, short, cylindrical hyphae (5-20 µm diam.), terminal cells subclavate, with brown, plasmatic pigment. Clamp connections absent.
Habitat: On or among litter of tree-fern (Dicksonia spp., Cyathea spp.). New Zealand.