Davin is correct; Thiers somehow swapped stipe descriptions between silvicola and smithiana. The rooting base of a smithiana is so long it is rarely collected. If you look closely at your photos, you can see where the base was broken off. I was more disturbed by the red coloration on the cap; but when I collected this mushroom in OR, also under red fir, it, too, was stained red, from rain dripping down from its host tree. I was also unable to dig one up entirely, since it was wrapped and tangled in the roots of its host tree, but I tried, time and time again.