In the latter species there are only two spores in an ascus.
"Studies of American Fungi. Mushrooms, Edible, Poisonous, etc."
George Francis Atkinson
47 29. Peziza Fuckeliana, with ascus and sporidia.
"Fungi: Their Nature and Uses"
Mordecai Cubitt Cooke
193 106. D. Nectria with Tubercularia, ascus and paraphyses.
"Fungi: Their Nature and Uses"
Mordecai Cubitt Cooke