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 Mycena mamaku
BiostatusPresent in region - Indigenous. Endemic
Images (click to enlarge)
Caption: Fig. 2 M. mamaku. la. basidiome X1.5. 1b. detail of basidiome X3.2. basidia. 3. cheilocystidia. 4. basidiospores. 5. pileipellis elements. 6. caulocystidia. | 
Caption: Mycena mamaku
Owner: Kaimai Bush | 
Caption: Mycena mamaku
Owner: Kaimai Bush | 
Caption: FUNNZ: 2006/0432, See public note for more information
Owner: FUNNZ | 
Caption: Dried type specimen
Owner: Herb PDD |
Article: Segedin, B.P. (1991). Studies in the Agaricales of New Zealand: some Mycena species in sections Longisetae, Polyadelpha, Rubromarginatae, Galactopoda, Lactipedes, and Calodontes. New Zealand Journal of Botany 29(1): 43-62 (http://www.rsnz.org/publish/abstracts.php).
Description: Pileus 2-3 mm,
narrowly parabolic to campanulate, slightly depressed at the top with often
a tiny, pointed umbo, pinkish buff, darkening to reddish-brown, brick colour
in the centre, smooth, dry, sulcate almost to the top, flared margin crenate,
matching the grooves, and slightly darker in colour. Lamellae broadly adnate,
1 series, 12 in number, buff coloured, margin even. Stipe 20 X 1 mm, buff at
the lop but brick-coloured for most of length, even, smooth, fistulose, cartilaginous,
insititious, no basal hairs. Flesh cream, thin except at the flattened top of
the pileus. Odour and taste unknown.
Colour of spore print unknown. Spores 7-9 X 4.5-5.5
(7.0 X 5.25) µm., Q=l.5, ellipsoid, hyaline, l strongly amyloid, smooth, thin-walled.
Basidia 15-20 X 6-7 µm., 2- and 4-spored. Cheilocystidia 15-20 X 6-9 µm., clavate,
with short, simple, diverticulate outgrowths, not very frequent, mixed with
basidia and scarcely projecting beyond them. Pleurocystidia none. Trama of more
or less parallel, narrow (5 µm.) and broad (20 µm.) hyphae, hyaline to faintly
yellow; a few conducting hyphae with refringent yellow contents. Pileipellis
of repent hyphae 4 µm. diam., giving rise to simple, repent, hearth-brush-like
cystidia (4-8 µm. diam.) with short (4 µm.), mostly simple, sometimes diverticulate
outgrowths, or cystidia may be erect, sphaero-pedunculate to clavate, with simple
or shortly diverticulate outgrowths, or compoundly sphaero-pedunculate. Subpellis
of repent narrow (l-2µm.), somewhat gelatinised hyphae. Context of fairly uniform,
broad hyphae, family yellow (KOH) and faintly encrusted, dextrinoid in Melzer's.
Caulocystidia none. Clamp connections present.
Habitat: HABITAT: Among matted aerial roots at the base of trunks
of black tree fern, Cyathea medullaris Swartz (Maori name, mamaku).
Notes: ETYMOLOGY: The specific epithet refers to the habitat
on aerial roots of mamaku.
This is a very
easily recognised fungus, with a very characteristic pleated, parabolic shape,
apparently always growing among the aerial roots of Cyathea medullaris.
It strongly resembles M. lohwagii Sing. and M. pterigena (Fr.:
Fr.) Kumm., differing from them in colour of the basidiome, smaller and more
strongly diverticulate cheilocystidia and pileipellis elements, lack of caulocystidia,
and a different fern substrate.
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