Lloyd Mycological Writings V4.pdf - MykoWeb

SPORES HYALINE.
POLYPORUS UNDATUS (Figs. 662 and 663). Pileus white,
usually resupmate, or with a reflexed pileus, turning dark reddish
brown in drying. Pores minute, or hiascent, in an oblique position,
mouths cinereous when dried. Spores globose, 3-4 mic., hyaline,
smooth.
This species is usually resupinate, hence is generally classed as
Poria. In Europe it is rarely known to develop a pileus. It is frequent
in United States, always as a Poria. Persoon knew it only from a dried
specimen that had changed color. He gave a very good figure of the
dried plant (Myc. Europe, t. 16, f. 3). The plant is represented in
most museums under the name Polyporus Broomei, having been so
distributed by Rabenhorst, No. 2004, also Sydow, No. 5. Bresadola
was the first to clear up the subject. He refers here as a synonym
Polyporus adiposus, as the plant is known in the English text books.
From what we could learn from the material at Kew, adiposus seems
to be the same plant. In the United States, Polyporus undatus is a
^
frequent "Poria," forming slabs on very rotten logs. It is common
around Cincinnati, but we have never seen a pileate form with us.
Compare adiposus, Broomei, cinctus.
POLYPORUS PALLESCENS, in sense of Romell is very close to Polyporus undatus and appears
similar to the eye. The spores 2x4 are not the same, however, and I think it is a different species,
but very close.
POLYPORUS STIPTICUS. Pileus dimidiate (1^x3x4),
white, rufescent on margin. Surface dull, smooth, no distinct crust.
Flesh white, drying white and hard. Pores, at first, round, small,
becoming larger and irregular when old; 6-8 mm. long,
white, slightly rufescent in drying. Spores (Fig. 664) (W.)
elliptical, and slightly curved, guttulate, x 3-4.
1>^
We know this only from English collections, and it is
evidently a very rare plant. The flesh is stiptic to the
taste, and we are convinced it is the original of F '9- 664 -
Polyporus
stipticus of Persoon, as to description, but surely not "passim" on
trunks, and not the common white plant usually called Polyporus
stipticus in France (cfr. albidus). We have but two collections of this
species from England, and one each from France and Sweden, these
both doubtful.
SPECIMENS. England, E. M. Wakefield, Chas. Crossland.
POLYPORUS CRISPELLUS. Pileus thin, white, usually largely decurrent
behind. Surface fibrillose, nearly smooth. Pores medium large, thin, collapsing,
discolored in drying. Spores 3>4 x 5-6, oblong, hyaline, smooth.
If I correctly refer specimens received from Mr. Weir, this is close to, if not
the same as, Polyporus destructor of Europe. It is thinner, the spores slightly
longer, but it has the same discolored pores and is probably the same plant. Peck
states that it differs from destructor by having a zonate pileus, a feature not shown
in dried specimens. Mr. Weir's specimens are very thin, and curl in drying.
SPECIMENS. Montana, James R. Weir, on pine.
Compare pachycheiles.