View A43-1112-1979-eng.pdf

EDIBLE AND POISONOUS MUSHROOMS OF CANADA
RUSSULA EMETICA (Schaeff. ex Fr.) Pers. ex S. F. Gray Suspected
Figures 95, 96, page 49
piLEUS 2-4 in. broad, fleshy, firm at first, soon becoming fragile, convex,
becoming plane or slightly depressed, rosy red to blood-red, sometimes fading
to white, viscid when wet, glabrous, shining, pelhcle separable, margin strongly
tuberculate-striate. flesh white, red under the pellicle, very acrid, lamellae
slightly adnexed to free, close to subdistant, rather broad, narrowed behind,
white, stipe 1 )/2-3 in. long, )/2-% in. thick, nearly equal, smooth, white or
tinged red, spongy-stuff'ed. spores white, subglobose, (7) 8-10 X (6) 7-8.5
(9)
ju, ornamented with fairly high warts and spines, more or less joined by
fine lines to form a partial reticulum.
Scattered to gregarious on the ground or on very rotten wood. July-Oct.
This species is very close to R.fragilis and some authors consider these to
be varieties or subspecies. R. emetica is usually a little larger, the flesh is red
under the cuticle rather than white, and the spores seem to be slightly larger
with slightly higher ornamentation.
The taste is very acrid and although some have claimed that this taste
disappears on cooking and that the species is edible, it is not recommended.
RUSSULA FALLAX sensu Kauffm. Suspected
Figure 97, page 49
PILEUS 1-21/2 in. broad, thin, fragile, plane or sHghtly depressed, usually
rose or flesh colored on the margin, with an ohvaceous zone surrounding the
disk which is usually much darker and purplish, viscid, glabrous, pellicle
separable, the margin striate, flesh white, or tinged like the peUicle under the
surface, acrid, lamellae adnexed, subdistant, narrow, white, stipe 1-2 in.
long, )4-/4 ir^- thick, equal, cylindrical or somewhat compressed and with
minute longitudinal wrinkles, white, spongy-stuff'ed to hollow, spores white,
subglobose, 6-8 X (4.5) 5-7 m» ornamented with warts that are more or less
joined by lines and ridges to form a nearly complete reticulum.
Solitary or gregarious on mossy ground in the woods, or among sphag-
num. July-Sept.
This little species with its characteristically colored pileus, white spores,
and very acrid taste is fairly common. It is related to the fragilis-emetica com-
plex. It is probably not the true R. fallax Cke. but is the species Kauff'man
described under that name.
It is not recommended for eating because of the acrid taste.
RUSSULA FLAVA Rom. Edible
Figure 98, page 49
PILEUS 2-3 in. broad, rather fragile, at first convex, becoming plane or
slightly depressed, dull yellow or golden yellow, sometimes becoming ashy in
age, viscid when moist, glabrous, pellicle separable, margin even or slightly
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