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EDIBLE AND POISONOUS MUSHROOMS OF CANADA<br />
Key<br />
1. Stipe lateral or lacking 2<br />
1. Stipe excentric 3<br />
2. Pileus cupulate; lamellae covered by a veil when young P. operculatus<br />
2. Lamellae not covered by a veil; taste astringent P. stipticus<br />
3. Pileus densely hairy P. rudis<br />
3. Pileus glabrous or delicately tomentose to slightly scaly P. torulosus<br />
PANUS OPERCULATUS B. & C. Not edible<br />
Figure 175, page 110<br />
PILEUS 54-/4 ii^- broad, leathery, more or less pendent to convex, narrowed<br />
behind or above to a short stipelike base, brown or grayish brown, at first<br />
minutely flocculose-tomentose, becoming glabrous, margin strongly incurved,<br />
even, flesh whitish, thin, lamellae radiating from an excentric point, close,<br />
narrow, pale brown, veil a membranous tissue, covering the lamellae and<br />
sphtting, leaving fragments on the margin, stipe lateral or dorsal, very short or<br />
almost wanting, about J^e-Vs ii^- ^^ diameter, concolorous with pileus. spores<br />
white, allantoid, smooth 4-5 X 1-1.5 /x.<br />
In groups on twigs of deciduous trees. Sept.-Nov.<br />
Panus salicinus Peck is very similar in appearance but lacks the veil. These<br />
two species have been discussed by Overholts (1938). They are not closely<br />
related to other species placed in Panus, but would be better placed in the<br />
genus Tectella, of which T. patellaris (Fr.) Murr. is the type. Some authors<br />
regard Panus operculatus as a synonym of Tectella patellaris, but Overholts<br />
questioned this since Fries did not describe or illustrate a veil for T. patellaris.<br />
The species is of no importance from the standpoint of edibility, but it is<br />
an interesting and puzzUng form that is not very common.<br />
PANUS RUDIS Fr. Edible; tough<br />
Figures 238, 239, page 153<br />
PILEUS %-2% in. broad, depressed toward the stipe, varying in shape from<br />
vase-like with central stipe to ear-shaped with almost lateral stipe, leather color<br />
to tawny or reddish, surface with a rather coarse, velvet-hke, hairy coating,<br />
sometimes shghtly tufted, margin at first inrolled, sometimes irregularly lobed.<br />
FLESH tough, somewhat corky when dry, taste slightly bitter, odor not distinc-<br />
tive. LAMELLAE dccurrcnt on stipe, crowded, narrow, paler than the pileus.<br />
STIPE short and stout, sometimes almost lacking, equal or tapering downward,<br />
slightly excentric to almost lateral (never truly lateral), tomentose, concolorous<br />
with or paler than the pileus. spores smooth, white, ellipsoid, 5-6 X<br />
2-3 M.<br />
162<br />
Clustered on logs and stumps, common. June-Sept.<br />
This is a very common species occurring on old stumps or logs. Its tough
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