Key to genera related to Anthostomella-like genera
1. Hyaline ascospores	Alloanthostomella
1. Brown ascospores	2
2. Asci with a J- apical ring	3
2. Asci with or without J+ apical ring	5
3. Ascospores with or without germ slit	4
3. Ascospores with germ slit	Xenoanthostomella
4. Ascospores with a germ slit and the length less than spore length with a mucilaginous cap at the apex	Haploanthostomella
4. Ascospores with or without germ slit, with mucilaginous sheath	Neoanthostomella
5. Asci with a J+ apical ring, ascospores with germ slit, with or without mucilaginous sheath	6
5. Asci with J+ or J- apical ring, ascospores with or without germ slit (straight or spiral), and also with or without appendages or mucilaginous sheath	Anthostomella
6. Ascospores with germ slit less than spore length, with or without mucilaginous sheath	7
6. Ascospores with germ slit extending over full length with mucilaginous sheath	Pseudoanthostomella
7. Ellipsoid ascospores without mucilaginous sheath	Virgaria
7. Inequilaterally oblong-ellipsoidal ascospores with mucilaginous sheath	Anthostomelloides