Sporocarps scattered, globose to ovoid, total height ca. 1-1.5 mm,
sporocyst diam. ca. half of total height.
circular under individual sporocarps, dark reddish brown.
ca. half of total height, shining black, thin and tapered upwards, often
± flattened, in TL not fibrous, dark reddish brown to almost opaque.
early evanescent, at most leaving a tiny collar round stalk.
a continuation of stalk, reaching from ca. 2/3 to apex of sporocyst,
giving rise to capiliitial main branches along whole length.
of rather slender threads, branched 2-4 times from columella to periphery,
dark brown, translucent, by TL, many free ends at periphery.
dark brown by RL, pale yellowish brown by TL, globose, 5.5-6.64-7 µm Ø
(n=25), ornamented with spines and short ridges, often forming an
incomplete net, ca. 0.3-0.5 µm high.
not seen. Immature sporocarps milky white.
On dead dead needles of Abies sp., on the ground.
Unknown. only one locality known.
Described from and only reported from the Netherlands, with a handful
The Danish material was collected as immature, milky white sporocarps
and matured in a box. On the same occasion three species of Didymium,
nigripes, clavus and squamulosum, were collected from the same substrate.
The type of habitat, Abies-plantations grown for production of branches
used for ornamental purpose at cristmas time, are extremely common in
Denmark, suggesting a further distribution.
Based on the present description Hans van Hooff has verified the
identification. His help is gratefully acknowledged.
Description and discussion based on the only Danish collection:
HFG 2433, Denmark, Fyn, Langesø, 2017.10.22.
Abbreviations: TL : transmitted light; RL : reflected light; Ø : diameter;
TBU : Danish Botanical Topographical District.
Colour-codes refer to: Kornerup, A. & J. H. Wanscher 1974: Farver i farver.
5th reprint. Politikens Forlag, Copenhagen.
When not otherwise indicated spore measurements are given as:
min-mean-max or (extreme-)min-mean-max(-extreme). Spore measurements are exclusive of ornamentation.
Line drawings are free hand sketches.