Finding Rainbow Chanterelles, Cantharellus roseocanus

Chanterelles are one of those mushrooms that most have heard about, seen on a menu, or at the fancier grocery store. They are a coveted mushroom because they can only be found in the wild due to their mycorrhizal relationship with trees. These rainbow chanterelles can be one of the more tricky mushrooms to figure out in Colorado, but the effort is worth the reward! So, let's learn how to identify them, what look-alikes exist, and where to look for them!

Colorado rainbow chanterelles.

Identifying Rainbow Chanterelles

I've encountered many chanterelles in my life, yet I still regularly find myself surprised by them. I rarely go out specifically looking for chanterelles because they are hard to pin down. I treat them as more of a species I always watch out for while hunting for other mushrooms. Through years of that passive approach, I have noticed some trends that may help you locate some chanterelle spots of your own. Before we review those trends, I'll touch on the best traits to know for identifying chanterelles!

There are many species of Cantharellus throughout North America and elsewhere. However, we only have one in Colorado, at least as far as the DNA analysis has gone. The rainbow chanterelle, Cantharellus roseocanus. This species, and many others in North America, were grouped with the European species Cantharellus cibarius, the golden chanterelle. However, like many other mushrooms before it, the golden chanterelle is likely found only in Europe, and many of our North American species are similar. That said, chanterelles are still very easy to identify if you look for a few key traits.

Chanterelles come in various colors and sizes, from yellows to oranges and even pinks, and from several inches across to less than an inch! Despite the variety among these mushrooms, they share several traits that can be used to identify them easily. The first of these is the presence of ridges, sometimes called false gills. This trait often confuses beginners because, at first glance, these ridges may appear to be gills. However, if you look closely, there are a few differences. Gills are structurally different from the cap and stem of a mushroom and can be separated from them. Ridges are made from folds on the mushroom's surface, not a separate structure. Consider pinching cloth to create folds versus laying something on it. Below is a macro comparison of the ridges on a chanterelle and the gills on a deer mushroom.

Close-up of chanterelle ridges

Close-up of mushroom gills

Next, chanterelles almost always have whitish flesh that peels like string cheese when pulled apart. Not only is this a good trait to identify chants with, but it's also an easy way to prep them for the saute pan! Grab the stem and peel it to the desired size. Finally, chanterelles are known for their fruity aroma, often apricot-like. This scent is sometimes hard to detect with just a couple of freshly picked specimens, but it becomes more obvious after you get a handful into your mushroom basket or bag.

The rainbow chanterelles can be differentiated from other chanterelle species by the regions they grow in, their small size, and the pink-orange color of their caps. This pinkish color is often subtle on the chanterelles found in the Southern Rockies, but it can be very apparent in other regions where these grow!

A small handful of rainbow chanterelles.

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Where to Find Rainbow Chanterelles

So, with those traits covered, let's move on to how and where to look for them! In Colorado, chanterelles can be found from around 7,500 to treeline in association with conifers and sometimes aspens. Rainbow chanterelles are most commonly associated with spruce, lodgepole pine, and ponderosa pine in Colorado. I find them in areas with good drainage and some sunlight. They often fruit around the edges of rocks, logs, or in the Kinnikinnick, a low-growing evergreen plant. They can be found fruiting along old logging roads, hiking trails, and sunny clearings with moss and huckleberries in higher elevations.

Chanterelles in kinnikinnick

Chanterelles in huckleberry

When you come across some chanterelles, be sure to scour the area, as there are often more nearby! And be sure to GPS mark or mentally note the spot, as they'll return every year when conditions are right for them. I have yet to determine the ideal chanterelle fruiting conditions. Some years, I find a lot, but the following year, similar conditions can result in very few. I have a hunch that these chanterelles fruit well every five to seven years and then take a break to reserve energy stores for the next fruiting. This is not backed by anything other than my observations over the last 20 years or so. I suggest regularly checking your spots if the conditions seem good. At the very least, you'll be in the mountains and probably find other tasty mushrooms like king boletes, hawk's wings, and hedgehogs!

Chanterelle Look-alikes

If you pay attention to the traits I went over above, you shouldn't have any issues identifying chanterelles positively. However, we'll touch on one look-alike that can occasionally fool beginners: the false chanterelle, Hygrophoropsis aurantiaca. This mushroom can look like a chanterelle from above, but once you look underneath, it should become obvious from the gills alone. The false chanterelle also lacks the fruity aroma and flesh that peels like string cheese.

False chanterelles

Underside of false chanterelle

Inside a false chanterelle

In Summary

The rainbow chanterelle, Cantharellus roseocanus, has:

• Yellow to yellow-orange with a pinkish blush on the cap.

• Ridges or "false gills" on the undersurface.

• White flesh peels like string cheese.

• Fruity, apricot-like aroma, especially after being stored in a bag.

• Elevations from 7,500 to treeline.

• Associates with spruces and pines.

• Prefer areas with good drainage and some sunlight.

• Occasionally, near old logging roads or hiking trails.

Foraging Calendar

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