Nash, T.H., Ryan, B.D., Gries, C., Bungartz, F., (eds.) 2004. Lichen Flora of the Greater Sonoran Desert Region. Vol 2.
Mycelium: immersed, invisible, in section as some brown hyphae visible near the base Pseudothecia: black, opening apically with an irregular slit and obtecting part of the ascoma wall crumbling off and exposing the hymenium, finally apothecioid, 0.15-0.2(-0.25) mm in diam; ascomatal wall: dark brown in the outer part, pale brown inside, 2530 µm thick, paraplectenchymatic, composed of cells 5-7 µm in diam. hymenium: hyaline, 45-55 µm tall; paraphysoids: scarce, branched and with anastomoses, 2.5-3 µm thick; apical cells: enlarged, up to 6 µm in diam., surrounded by a brown amorphous pigment asci: broadly clavate to broadly cylindrical, 34-50 x 14-17 µm, 8-spored ascospores: remaining hyaline for a long time, finally pale brown, 1-septate, rarely with 1-2 additional septa, smooth, relatively thin-walled, constricted at the median septum, (13-)16-17(-18) x 6-8(-8.5) µm Conidiomata: not observed. Hosts: commensalic on thalli and apothecia of Caloplaca species over rocks: C. modesta (= C. subsoluta), C. saxicola, and C. cf. squamosa, outside the Sonoran region also on C. cinnabarina; not visibly damaging the host World distribution: known from a few localities in Australia (Queensland) and North America (U.S.A. and Mexico) Sonoran distribution: so far known only from five localities in Arizona, southern California and Chihuahua with an altitudinal range from 340 to 1470 m. Notes: Buelliella inops is a rare inhabitant of Caloplaca species on rocks so far known only from subtropical regions. It was first reported in the Sonoran region by Triebel et al. (1991) under the generic name Karschia.