Saccobolus depauperatus  

Stromata absent.
Ascomata apothecia, 100-200 (-250) µm diam. and 100-300 µm tall, scattered or gregarious, superficial, sessile, at first subglobose, then more expanded and becoming pulvinate or turbinate-hemispherical, often with a narrow base, hyaline, sometimes becoming pale violet, smooth; margin not differentiated. Disk convex, hyaline and then pale vinous to violet, dotted with the dark purplish protruding tips of ripe asci. Hymenium 70-80 (-100) µm thick. Exciple with an outer layer of ± globose cells 6-14 µm diam., hyaline or with pale purplish intercellular amorphous pigment. Interascal tissue of unbranched paraphyses, sometimes rather sparse, 1.5-3.2 µm diam., slightly enlarged to 4.5 (-6) µm at the tip, often slightly curved above, without a gelatinous coat. Asci 60-85 x (12-) 15-20 µm, broadly clavate, gradually tapering downwards into a rather thick base, the apex truncate, blueing in iodine, 8-spored. Ascospores ejected as compact clusters 28-37 x 10-13µm, the ascospores arranged in two parallel rows of three with two further spores attached laterally, 10-14.5 x 5-7.5 µm, ± ellipsoidal, sometimes somewhat asymmetrical, with blunt ends, at first hyaline, then pinkish-violet, finally dark violet or purplish-brown, smooth or finely granular, the pigmented layer much thicker where spores are juxtaposed within the cluster.

Description adapted from van Brummelen (1967).