Mycologia 84(5), 806, 1992
Ascomata 375-525 mm high, up to 575 mm in diam., immersed, globose to subglobose, ostiolate, ostiole rounded in section, short papillate, coriaceous, brown or black, neck surrounded by a small clypeus, solitary or gregarious. Clypeus extending outwards around the papillae composed of small dense pigmented cells.
Asci 146-178 x 7-10 mm, eight-spored, cylindrical, thin-walled, unitunicate, short pedunculate, apically rounded or flattened with a faint ring-like subapical apparatus.
Ascospores 19-26 x 5.5-7.5 mm overlapping uniseriate, young ascospores two-celled, becoming (4-) 5 (-6)- septate when mature, hyaline, ellipsoid, surrounded by a thin sheath which swells in water.
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