Current name: Ascobolus archeri Berk., Botany of the Antarctic Voyage. III Flora Tasmaniae. 2: 276 (1860) [MB#235515]
Sporenform
Elliptisch
Sporenmembran, Oberfläche, Skulptur
Dickwarzig
Apothecia gregarious, superficial, sessile, up to 4 mm across. Receptacle scutellate, finally slightly undulate, “vinoso-fusca” at maturity, almost smooth, with a rounded, somewhat eroded margin. Disk concave, then flat, brownish at maturity, roughened by the protruding asci. Hymenium up to 230 µm. Hypothecium clearly differentiated, 30-40 µm thick, of isodiametric, rounded cells 6-12 µm diameter. Flesh of subglobular or slightly elongated cells 7-18 µm diameter, hyaline. Excipulum up to 80 µm thick near the margin, of subglobular, rather thick-walled cells 10-26 µm diameter, brownish, irregularly eroded at the outside. Asci cylindric-clavate, tapering downwards, roughened above, up to 250 x 23 µm, 8-spored; only when very young the wall pale blue in Melzer’s reagent. Ascospores uniseriate, finally more or less biseriate ellipsoid, at first hyaline, then violet. finally purplish-brown, 17.5-22 x 9-11.5 µm (pigment included), often swollen, ornamented with a very regular pattern of round warts 1.0-1.3 µm diameter; pigment in a 1.5-2.5 µm thick layer; without oildrops or granules. Paraphyses branched, septate, cylindrical, about 2 µm thick, not or only very slightly enlarged up to 3 µm at the tip, embedded with the tips in coloured mucus. On charcoal.