siphonophorespiral's Identifications

Are these rare or common? I’ve found 3 in the past two days.
I used a Canon Rebel EOS T6 and a remote shutter app to take these images. (And obviously a microscope). I consider these to be some of the best images I’ve ever taken. These were taken after I brought the mushrooms back from the field to my backyard.

Habitat: Growing in leaf litter near Thuja, Acer, Alnum, Tsuga, and Ilex species. Growing next to one other specimen.
Cap: Not applicable here I think. Puff-ball like. I don’t know the anatomy behind these genera. So I’m gonna skip down to spore print.
Spore print: Dark brown.
Spore morphology: Roughly spherical, ornamented.
Spore measurements:

3.2 - 3.9 (4.1) × (2.8) 3.1 - 3.7 (4.1) µm
Q = 1 - 1.08 (1.1) ; N = 24
Me = 3.5 × 3.4 µm ; Qe = 1

Observation #386