Fungi -- Great Britain -- Identification; Mushrooms -- Identification
_General Information_: _N. asterophora_ Fries is closely related and
also grows on decaying specimens of various species of Russula,
particularly _R. nigricans_ (Fries) Fries. It differs, however, in the
cap being fawn-coloured and very mealy when touched; it is recognised
by the poorly formed often developmentally hindered gills on which
chlamydospores are formed. Unlike the smooth asexual spores in _N.
parasitica_ this species has chlamydospores with conical, blunt
humps--i.e. star-shaped; _asterophora_ in fact means ‘I bear stars’.
These fungi have been associated by some mycologists with the common
chanterelle (_Cantharellus cibarius_ Fries, see p. 162) in virtue of
them possessing reduced fold-like gills. However, the fold-like gills
are secondary in nature, correlated with the active production of
chlamydospores and the suppression of the formation of basidiospores.
The gills are not therefore of a primitive type. The genus _Nyctalis_
is related to fungi such as _Tephrocybe palustris_ (Peck) Donk (see p.
223).
There are several rather uncommon ‘agaric-parasites’ of agarics or
other higher fungi, e.g. _Volvariella surrecta_ (Knapp) Singer, but
their formal description must be left to other more advanced texts.
However, the intriguing bolete, _Boletus parasiticus_ Fries, which
grows on _Scleroderma_ (earth-balls) in this country has been
mentioned and figured previously (p. 35 & Plate 64). It is of interest
to note that a close relative of _B. parasiticus_ in Japan lives on
another group of Gasteromycetes.
_Illustrations_: _N. parasitica_--F 11^{a}; LH 81; WD 25⁷. _N.
asterophora_--LH 81; WD 25⁸.
General notes on Fungicoles
Many beginners are confused on finding specimens which, although
appearing agaric-like, are covered in long hairs or irregularly shaped
bumps. Indeed many of these abnormalities are true agarics attacked by
microscopic fungi, and I know of one textbook on mushrooms and
toadstools which includes such an abnormality amongst the discussion on
the normal fruit-bodies. Thus _Sporadinia grandis_ Link, which is a
primitive fungus, attacks many fungi reducing them to a grey velvety
mass of fungal filaments. Specimens of several species of _Mycena_ (p.
88) are common in autumn, covered in whiskers with small nobbles on the
top. These whiskers are produced by the parasitic _Spinellus
megalocarpus_ (Corda) Karsten, another primitive fungus--a phycomycete.
Public-domain text, read in full here on John Shaqi.
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