Properly identifying mushrooms takes a few steps. Oftentimes it is difficult – if not impossible – to identify a mushroom just by looking at its top surface alone.

It is critical to also look underneath the mushroom to see what kind of fertile surface type it has. Different species of fungi can sometimes look very similar from above, but actually have vastly different kinds of fertile surfaces below. For example, with the classic cap-and-stem mushroom the fertile surface is located on the bottom side of the cap. There you will see the fertile surface on which the mushrooms spore’s (like plant seeds) are formed.

There are 3 different shapes of fertile surface types that you will most often find under the cap:

  1. Gills look like pages in a book.
  2. Pores look like a bunch of small – sometimes very tiny – holes.
  3. Teeth look like elongated, cone-shaped spines.
    […and some mushrooms have veins underneath.]

hymenophore types

Sometimes when identifying, we only want to know what type of fertile surface a mushroom has. To do this we actually do not need to pick it from the earth – or maybe the the mushroom doesn’t want to be picked! Perhaps it is still too young & we want it to complete its lifecycle by maturing & releasing its spores yet we still want to know what kind of mushroom it is. In this case, we can use a dental mirror to see what kind of fertile surface the mushroom has to help us with identification.

It’s easy. What we do is simply hold the dental mirror against the ground underneath the mushroom’s cap, & then angle the mirror towards our eyes so that we can see if the mushroom has gills, pores, or teeth. This step can either get us closer to identifying a mushroom to species or can sometimes even give us a definitive answer as to what the mushroom is.

Photo by Jason Youth | CC0 public domain | iNaturalist

Photo by Jason Youth | CC0 public domain | iNaturalist

Always be sure to see what kind of fertile surface the mushroom has. And if getting help from others by sending them your photographs of the mushroom, be sure to always include a photo of the fertile surface in addition to the top surface.

If you want to learn more about mushroom ID, then please join us for our next mushroom identification class by clicking here.

Thank you all for attending our last identification & low-tech mushroom cultivation workshop last month! We were so stoked that participants found over a dozen different species of fungi at the workshop even after such a prolonged dry spell!

Culinary & medicinal fungi found included: Snow Fungi, Paddy Straws, Cloud Ear, & Fan-Shaped Jelly Fungus.

Fan-Shaped Jelly Fungus

Fan-Shaped Jelly Fungus

Medicinal fungi found included: Bloody Polypores & Northern Cinnabar Polypores.

Bloody Polypore on wood

Bloody Polypore

Poisonous fungi found included Flowerpot Parasols & Onion Earthballs.

Onion Earthabll

Onion Earthball

Curious & beautiful fungi found included: Tinypores, Bird’s Nest Fungi, various Stinkhorns including Sea Anemone Stinkhorns, Split Gills, & Spring Polypores.Stinkhorn Egg

Stinkhorn Egg

An update on our low-tech project we created together: several of the spent coffee grounds & used cardboard oyster spawn jars have fully myceliated & have just now been set up for fruiting mushrooms!!!

jars myceliated

oyster myceliated spent coffee ground jars

Thanks to Chef Nicot for slicing & dicing that mountain of cloud ear fungus!

cloud ear fungus meal

Cloud Ear Fungus meal by Chef Nicot

See you all at our next workshops!