063015_YKMV_A10.pdf
June 30, 2015 • Page 10
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SDSU Extension
Having Fun With Fungi
BY DAVID F. GRAPER
SDSU Extension
Spring is a time when many
intrepid mushroom hunters
head out to their secret spots
in search of mushrooms,
particularly the highly prized
morels. Morel mushrooms are
especially desirable for their
delicious taste and also because they are relatively rare,
at least in the prairie where
we live.
Morel mushrooms prefer
to grow in hardwood forests,
usually around the stumps
of old dead trees, especially
American elm. Here in South
Dakota, they may be found
along the Missouri and Big
Sioux rivers as well. Since we
don’t have many hardwood
forests and most of the elms
are long gone, finding morels
can be pretty challenging.
If someone does find some,
they will probably keep their
location a secret, kind of like
that favorite fishing hole or
that productive patch of wild
asparagus.
HOW TO IDENTIFY A MOREL
FROM OTHER MUSHROOMS
Morels are only found
for a few weeks in the spring
of the year, usually after a
good soaking rain. They can
be found by the dozens in a
good spot, essentially growing
up overnight. They typically
grow about 2 to 5 inches tall
and are about 1 to 2 inches in
diameter. The brown or gray
caps have a distinctive wavy,
brain-like appearance. If you
cut one in half from top to bottom it should be completely
hollow inside.
If all of these characteristics match up with what you
find, then you can be pretty
sure that you have morels.
But, if the mushrooms you
find are filled with feathery
membranes inside or you find
something that sort of looks
like a morel but you don’t find
it until mid-summer or fall, it
is not a morel.
Morels are considered to
be one of the “fool-proof-four”
of wild mushrooms since the
identifying characteristics are
quite straight forward.
SHAGGY MANE
Another mushroom that
is easily identified and also
one of the fool-proof-four are
the Shaggy Mane mushrooms.
They are common in lawns,
growing to 6 inches in height
IMAGE: METRO GRAPHICS
and up to 2 inches in diameter.
The surface of the caps look
“shaggy” because they have
scales of tissue that hang off
the side. The caps are densely
filled with gills that start out
white but later turn gray, then
to black as they age. Shaggy
mane mushrooms will appear
in small, somewhat loosely
spaced clusters.
Inky caps are smaller
mushrooms and even more
common in lawns, again
around the stumps of old
trees or even close to where
a stump was ground out. The
fungus feeds on the decaying
roots beneath the soil. These
too will pop up overnight
following a good rain. These
emerge in clusters of tightly
bunched small mushrooms
about 1 inch in diameter in
groups 3 to 6 inches around.
Initially the caps are white
but later turn tan to light
brown. Beneath the caps are
gills that start out white but
later turn gray and eventually
black. The name “inky cap”
refers to the dark color of the
gills and that after a few days
these patches of mushrooms
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turn into an inky-black mass of
desiccated mushrooms.
The shaggy manes are
considered to be quite edible
but should be harvested and
eaten while they are young
and the gills are still white. If
you harvest some, it is best to
eat them right away because
you cannot store them for
long or they will deteriorate
into the same inky mess they
become in your lawn. The inky
caps can also be eaten but
with caution. One species can
cause poisoning symptoms if
eaten within 24 hours of consuming alcohol. So it is best to
probably stick with the much
larger shaggy manes.
Most people consider
inky caps a real eye-sore in
their lawn leading to lots of
questions on how to get rid
of them. Since the mycelium
or “body” of the mushroom
is actually beneath the soil,
growing through and feeding
on the decaying old roots and
stumps of dead trees, getting
rid of them permanently is
no easy task. It would likely
mean a large-scale excavation
process to get out all of the
old wood and even then they
might come back for a year
or two. The best thing to do
is use a stiff rake to get them
out of the lawn and dispose
of them.
PUFFBALLS AND
CHICKEN-OF-THE-WOODS
The other two mushrooms
considered to be members
of the fool-proof-four are the
puffballs and chicken-of-thewoods mushrooms.
Chicken-of-the-woods is
a shelf-type mushroom that
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grows on the sides of trees,
usually mid-summer to fall. It
is bright yellow to orange and
has pores on the undersides
of the shelves instead of gills
like the shaggy manes have.
Try to harvest this
mushroom when it is young,
brightly colored and has a soft
texture. As it ages the color
pales and the mushroom develops a tough texture. Some
people say that it does taste
like chicken when cooked.
The fourth mushroom is
the puffball. This mushroom
is also fairly common midsummer to fall. You may find
them growing in your lawn or
shelterbelt. They can range in
size from that of a golf ball to
a basketball. These are completely white inside and out
when they first grow but will
turn tan and eventually brown
as they age.
Harvest them while they
are still white. Peel off the
outer layer, then slice up the
inner “meat.” The texture of
these is kind of like eggplant,
and like eggplant, it picks up
the flavor of what it is cooked
with. When fully mature and
dried out puffballs develop a
hole near the top. If you kick
them at this stage you will see
clouds of spores fly out.
WHEN IN DOUBT, THROW OUT
Even though we say these
are the fool-proof four, one
should always be careful and
follow some of the old sayings
like: “when in doubt, throw it
out” or “there are old mushroom hunters; there are bold
mushroom hunters; but there
are no old, bold mushroom
hunters.”
Wild mushrooms can certainly be delicious but there
also those that are considered
non- edible because of texture
or flavor and then there are
those that are mildly poisonous to deadly.
Never eat anything that
you are not sure of. Even if
you are sure, but have not
eaten a particular mushroom
before, start with a small
amount and see how it affects
you. You might just be allergic
or have a reaction to a particular species, just as some
people have various food
allergies.
But what if you do not live
near a forest or have time to
go hunting for mushrooms?
Maybe you really love eating
mushrooms and want something more than the basic
white button mushrooms or
portabellas that you may find
in your local grocery store.
Maybe growing some of your
own would be an interesting
project to try and yield some
fresh and delicious mushrooms to add to your favorite
recipes.
SDSU RESEARCH INTO GROWING MUSHROOMS
Casey Snyder, an undergraduate Horticulture student,
is conducting a research
project on growing a few saprophytic (wood consuming)
mushrooms. Fresh gourmet
mushrooms are rare in the
United States and are a highly
prized commodity in the culinary world.
Among the mushrooms
considered gourmet, Shiitake
and Oyster are the most
commercially grown. Snyder’s
project focuses on these two
species of mushroom based
on commonality, consumer
demand, and ease of growth.
The preferred method used
for growing Shiitake and Oyster mushrooms is to collect
and then inoculate manage-
ably sized wood logs, typically
4 to 6 inches in diameter, with
mushroom mycelial spawn.
Logs are inoculated by
drilling holes in a diamond
pattern using a 7/16th inch
drill bit, filling open holes with
prepared spawn, and waxing
over exposed wood to seal
in the spawn and moisture.
Some species of mushrooms
have spawn that is growing on
dowels that are pounded into
the logs.
Prepared logs are then
handled gently and laid in
shelterbelts, stacked in sheds,
or propped against railings
in designated growing sites.
These sites should be shaded
and cool, but still allow for air
movement and ventilation to
prevent mold. Logs inoculated
in the spring, may fruit in late
summer or fall but are more
likely to fruit the next spring,
then again in the fall. Fruiting
may continue in the spring
then again in the fall for 3 to 5
years but is generally best in
years 2 to 3. The duration of
fruiting depends on temperature and humidity and the
condition of the logs.
There are many different
methods of creating mycelia spawn from mushroom
spores. Casey is using a commercially available sawdust
spawn that is typically more
economical than some other
types of spawn. The inoculated logs will be weighed and
sprinkled with water when
humidity is low. The logs are
very low maintenance between inoculation and harvest
as the mycelium needs time
to establish in the log before
fruiting. During this time the
mycelium is consuming nutrients and starches inside the
logs and ultimately preparing
itself for reproduction. This is
referred to as the incubation
stage of mushroom production. The edible mushrooms
that are harvested and consumed are the product of this
process.
This project aims to discover profitability and practicality of cultivating mushrooms in South Dakota. About
1.7 million acres or 3 percent
of South Dakota’s total land
area is forest land. Many
residents of the state have
access to woodland areas,
including wood lots and shelterbelts. Rural residents often
plant trees that are recommended by South Dakota State
Extension and Conservation
specialists. There are several
programs available through
the South Dakota Game, Fish,
& Parks, as well as the Department of Natural Resources
and the Conservation &
Forestry Department of South
Dakota, that pay landowners
to establish woody habitat for
many wildlife species, including nongame wildlife. The
State recommends a number
of trees to plant in shelterbelts, including: Bur Oak,
Crabapple, Black Hills Spruce,
Cottonwood, Green Ash and
many others While most of the
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