I know most of the general names for clouds seen at my location, but not the specific scientific ones in many cases. Thanks for that link. I'll bookmark the official catalog link. I just happen to have snapped a picture of this fairly rare( I'd not seen it before or since) type cloud 5 years ago looking east at smoke from large wildfires.

"Flammagenitus clouds form above the rising hot air from fires. In this case, most of the “cloud” in this picture is actually smoke, but if you look up towards the top of the plume you can see a white, puffy formation—that’s the flammagenitus."

The picture at left is from your posted Popular Science article and slide show, as described above; at right is the picture I took in 2012.

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