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Spores have a slit from end to end and a sheath. Ascus has a strange design at tip. Paraphyses end very thin towards base and have drops. Each unit was around 1.25 mm wide. Spores: 8.6-9.8 x 24-32 um. Asci: 14.8 x 148-160 um. There was some scanty brownish mycelium at base, turning dark brown and almost disappearing when units get too close. On hardwoods.

Edit: I returned to this location on 06/16/22 in hopes to find a mature specimen for microscopy and managed to find some.
Spores measured:
(18.6) 18.7 - 20.7 (21.5) × (4.5) 4.7 - 5.6 (6) µm

Conidia mounted in Lugol’s reagent measured:
(7.4) 8.1 - 9.2 (10.2) × (1.6) 2.1 - 2.8 (3.1) μm

Growing in soil under Pinus virginiana. Spores are considerably larger than what’s described from the neotype collection, so I would consider this a close relative.
Spore measurements:
(20) 20.5 - 23.6 (24.1) × (19.4) 19.6 - 22.2 (23.6) µm
Q = 1 - 1.1 ; N = 30
Me = 22 × 21 µm ; Qe = 1

Found by SEmushroomHunter, ID’d by Workman, who says "Spores: subrhomboid 6.6-8.2 microns

Cheilocystidia: 16.4-22.3 microns

Pleurocystidia: absent

Psilocybe weilii has smaller spores and abundant pleurocystidia. This specimen keys out solidly as Psilocybe caerulescens which is not unknown in the SE United States. P. caerulescens was first described by Murrill from Alabama in 1923 and as far as I can tell it hasn’t been reported from anywhere in the US since. This sample could be a remnant of that first described collection. Samples should be sent to a herbarium to officially document the find.

The only reason this sample was determined to be different from P. weilii is because of the microscopic examination. The two species are macroscopically virtually indistinguishable. I suspect that many of the “weilii” collections are actually unrecognized caerulescens or a mix between the two species. Further microscopic examinations of various collections is needed."