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 Byssomerulius miniatus
SynonymsMeruliopsis miniata
Merulius miniatus
BiostatusPresent in region - Indigenous. Non endemic
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Article: Ginns, J.H. (1976). Merulius: s.s. and s.l., taxonomic disposition and identification of species. Canadian Journal of Botany 54(1-2): 100-167.
Description: Basidiocarps effused, adnate, up to 10 x 4 cm and averaging 0.5 mm thick; margin
distinctive, pallid, yellow or vinaceous, matted-tomentose to membranous, up to 5
mm wide; hymenium reddish or somewhat vinaceous, crust-like, dull, the folds
narrow, about 0.2 mm deep, randomly branched, in a rugose to gyrose-plicate pattern
or anastomosing to form oval to circular pits, two or three per millimetre; context
white to pallid, nearly 0.2 mm thick, homogeneous.
Hyphal system monomitic; context hyphae randomly oriented, rather loosely woven,
usually branched at right angles, hyaline, simple-septate, thin- to rather thin-walled,
the latter predominate next to the substrate, 2-5.5 µ in diam; subhymenium and
adjacent context impregnated with fine granules; gloeocystidia cylindrical to slenderly
clavate, granule-incrusted, contents refractive, not discoloring in sulfuric
benzaldehyde reagent, 25-33 x 4-7 µ, or "24-30 x 4-6 µ" (Cunningham 1963), or "40-60 x 5-7 µ"
(Wakefield), rarely projecting up to 5 µ; basidia cylindrical to slenderly
clavate, 15-24 x 4-5 µ; spore wall thin, hyaline, smooth, IKI-, not staining in lactic-blue;
spores cylindrical, in profile allantoid, 4.5-6.5 x 1.5-2 µ (Fig. 2G).
Habitat: HABITAT: On twigs and branches of angiosperms on the forest floor, associated with
a white rot. Cunningham (1963) identified the substratum in the type as Nothofagus
fusca and listed another collection on Beilschmieda tawa. In addition a specimen (at
BPI) has as the substrate Eucalyptus obliqua. The collection on Griselinia lucida,
cited by Cunningham (1963) and represented at BPI and DAOM, is referred to
Phlebia rufa. Meruliopsis miniatus is known only from these three collections from
New Zealand and Australia.
Notes: DISCUSSION: No cultures are known. In the basidiocarps the gloeocystidia are
similar to the basidia in size and shape, and they also arise in the subhymenium.
The context hyphae and their organization are similar to that found in M. corium. The
similar species M. hirtellus, M. bellus, M. taxicola, and Ceraceomerulius
albostramineus can be distinguished from M. miniatus by the usually ovoid to
obovoid spores in M. hirtellus and M. bellus; the fusoid cystidioles in M. taxicola; and
the slightly shorter, allantoid spores and cystidia in C. albostramineus. Poria
purpurea could be confused with Meruliopsis miniatus, but it has the hymenium
developed in a cupulate fashion and has somewhat longer spores "5-7(-9) x 1.5-2(-3)
µ" (Lowe 1966). Meruliopsis miniatus is placed in Meruliopsis because of the
similarities that its basidiocarps have with other species in the genus, the presence of
simple-septate hyphae, and its association with a white rot.
Article: Wakefield, E.M. (1931). Fungi exotici: XXVII. Kew Bulletin of Miscellaneous Information 1931(4): 201-206.
Notes: In general appearance this species recalls Poria taxicola (Pers.) Bres. and Merulius Ravenelii,
but the colour is brighter than in either. From Poria taxicola it differs in the narrower basal
hyphae and from M. Ravenelii in the presence of thin-walled gloeocystidia, with coloured
contents, on the folds of the hymenium.
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