Mamiania  

Anamorph: Asteroma-like where known.
Teleomorph: stromata developing in yellow to brownish indeterminate spots on leaves, usually lenticular, occupying the entire depth of the host leaf and forming a raised pustule on both sides, black, composed of dark thick-walled cells or with just the exterior dark and the interior whitish and composed of loosely arranged thinner-walled cells, containing 1 to ca 30 ascomata in a single layer. Ascomata perithecia, globose or oblate, blackish, with short to elongate and straight or curved necks developing centrally, immersed in the stroma with the necks emergent separately on the lower surface of the leaf. Peridium several cells thick, composed of slightly compressed dark cells, neck wall composed of elongate cells. Interascal tissue absent, but neck periphysate. Asci cylindrical to cylindric-clavate, with a single discernable wall layer, with a I- refractive apical ring, 8-spored, becoming detatched within the perithecial cavity. Ascospores cylindric-ovoid or ellipsoidal to narrowly ellipsoidal, straight or curved, sometimes inequilateral with one side straighter than the other, hyaline, smooth, 1-septate, the septum dividing the spore length in a 3:1 to 6:1 ratio, without a gelatinous sheath or appendages.