The booted amanitas: Subsections Gemmatae and Pantherinae

The panthers and gemmed Amanitas: A. albocreata, A. aprica, A. frostiana, A “gemmata”, A. “pantherina”, A. multisquamosa, A. russuloides, A. velatipes

 

The European Amanita pantherina Illustration from Giacomo Bresadola's Iconographia mycologica (1927)

The European Amanita pantherina
Illustration from Giacomo Bresadola’s Iconographia mycologica (1927)

There are two groups of booted Amanitas: the panthers and the gemmed Amanitas. The pantherinae and gemmatae have usually been treated as separate groups, built around the large, dark brown A. pantherina and the much smaller yellow A. gemmata. That’s is pretty much how these species groups split up in Europe (where the taxonomy was devised). However, this doesn’t fit our North American mushrooms very well: we only have one dark brown species, and it isn’t very big, which also means that our biggest ones in North America are pale.
The European concept of Amanita gemmata (as A. jonquillea) Illustration from Giacomo Bresadola's Iconographia mycologica (1927)

The European, very yellow, concept of Amanita gemmata (as A. jonquillea)
Illustration from Giacomo Bresadola’s Iconographia mycologica (1927)

Note that I said “pale” instead of “yellow.” The color of pale booted Amanitas in North America is usually listed as yellow (albeit a pale or grayish yellow), which I take as a holdover from the European concept of gemmata. As you will see from the photos, in North America these mushrooms are often a pale, creamy tan, light brown, or almost white; and when there is yellow on them, it often shades into one of the other colors. Our only North American booted Amanita that’s a really solid yellow is Amanita aprica, which is also our most massive booted Amanita and looks quite different from any European species in the group. In any case, for purposes of identification, I am treating here all the members of section Amanita that have this kind of a bulb, regardless of their color or size.
These Amanitas are called “booted” because they have a rounded bulb at their base, with a rim near the stalk. The rim may be raised or rolled down at the top, like a sock that has been rolled down a little around someone’s leg.
Being able to place an Amanita‘s bulb as “booted” is not a sure-fire thing. The easiest group to confuse these with is the citrina/brunnescens group in the Validae, especially since the two groups have pretty much the same set of colors: pale yellow or tan, or dark brown. But in the Validae the bulb is cottony-soft for the pale yellow ones (on the citrina side of things) and is vertically cleft (and often angular and flat on top) for the dark brown-capped ones like brunnescens. Plus, the citrina/brunnescens group is in the subgenus Lepidella, so they will have amyloid spores while the booted Amanitas do not. So if you want to make sure, that’s the official way.
Some older A. velatipes, showing how stacks of rims on the stem can get jagged. Photo by Eric Smith

Some older A. velatipes, showing how stacks of bulb rims on the stem can get jagged.
Photo by Eric Smith

Another source of confusion is that sometimes the rim of the bulb detaches and rides up the stalk of the mushroom as it expands, leaving an extra rim (or two or three) stretched tightly around the stalk. You can see this in the panther picture at the very top of the page.
Well, there it isn’t very confusing, as those rims are new and smooth. But if the booted Amanita is old and these rims are deteriorating, they can get jagged and irregular. This can lead to confusion with subsection Amanita (the muscaria group), which characterized by having a stalk of jagged cogwheel-like rings at the base of the stalk. If the rings are confusing you this way, it’s best to remember that the booted Amanitas are generally these very washed out pale yellow and tan colors (except for Amanita frostiana, which certainly is colored like the mushrooms in subsection Amanita; and of course the PNW panther, which is dark brown), while the mushrooms in subsection Amanita are usually bright red and orange, and if they are yellow it’s a bright one.

There are a lot of these pale booted Amanitas, all across the continent; and most of them are still officially unnamed, especially the smaller ones. So don’t be surprised if your find doesn’t exactly match anything listed here.
The booted Amanitas generally contain the same toxins as in most of Section Amanita.