SITF has confirmed this plant as Pleurothallis bothros (May 2023). The length of the ramicaul is consistent with P. bothros as are the dimensions of the leaf and the large inflated floral bract. The dissected flower photo clearly shows the distinctive, almost teardrop shaped glenion at the base of the lip. Flower measurements of this plant also fit P. bothros. Supporting photos can be found in the OW, IOSPE (with a drawing), and orchidroots.com.