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1777a. 0 Pruni Lasch. (from its host plant, sloe, Prunus spinosa) a
Crustaceo-adnate, effused, thin, white, becoming pallid; marg
byssoid, warts minute, rounded.
LXXVIII. KNEIFFIA Fr.
(After Friederich Gotthard Kneiff, mycologist of Baden.)
Resupinate, effused, thin. Hymenium strigose and roughened
with rigid, scattered or fasciculate bristles which are barren outgrowths
from the fertile hymenial surface. Laxly fleshy, soft, collapsing
and becoming flocculose when dry. monosporous (Fig 93 )
Fig- 93-—A, K n e iffia setigcra Fi-., natural size ; b, section, enlarged.
The most perfect condition, where the growth is hemispherical
and three inches in diameter, has not been observed in Britain.
Must not be confounded with Peniophora, where the basidia are
4yspored and the cystidia, which are bristle-like, are covered with
minute particles of oxalate of lime. Species 1778, 1779
1778. K setigera Fr. (from the minute hairs or bristles borne on the
hymenium ; seta,_ a bristle, gero, to carry) abc.
Sub. white, becoming ochreous-ivory, sometimes pale grey ;
marg. sometimes pulverulent. Br. minute, single or several
connate, more or less scattered, hyaline; the basidia occur
between the barren bristles.
Dead wood, blackberry, pine, juniper, magnolia, grass. Tan.-Det. 4® in.
bometimes the spuriously tuberculose hymenium resembles that of 1770 or
1779. K. subgelatinosa B. & Br. (from the subgelatinous substance)
Hyaline yellowish, ivory or pale buff, surface very finely
granuloso-crested.
Stumps and cut surfaces o f fir. 4 in. Sometimes accompanied by a green
alga which penetrates the tissue of the fungus. Cracking when dry as in
Corticium.
LXXIX. MUCRONELLA Fr.
(From the sharp-pointed spines ; diminutive of mucro, a sharp point.)
Subiculum an extremely thin film, which soon becomes obsolete,
spines subulate, simple, acute, glabrous, scattered or fasciculate, and
more or less connate at the base. Basidia 1- 4-sporous. (Fig. 94.)
Mucronella was at first placed under (/. calva) by Fries,
but its fruit shows it to be a true Basidiomycete, and its fugitive
Fig. 9 4 .— A , Mucronella ca lva F r ., o n e - h a l f n a tu r a l size ;
B, b a s id i a a n d s p o r e s . X 500.
subiculum to'be one of the Hydnacem. Fries seems not to have
observed the feeble subiculum, sometimes distinct in M. fascicularis.
1780. M. ealva Fr. (from the habit, a fanciful comparison with an
almost bald head, bearing a few scattered short hairs ; calva,
the bald scalp) a.
Sub. obsolete or nearly so. Sp. slender, smooth, even, sharp-
pointed, covered except at the barren tips with 1- 4-sporous
basidia, whitish, then grey. The growth of the spines is in a
downward direction; dry examples revive with moisture.
Scattered or gregarious. Rotten wood, pine. Spines vary in size from a
minute granule to i in. long.
ii.