Coccoidella
Coccoidella Höhn., Sber. Akad. Wiss. Wien, Math. -naturw. Kl., Abt. 1 118: 847 (1909).
Index Fungorum number: IF 1145; Facesoffungi number: FoF 07956, 9 morphological species (Species Fungorum 2022), no molecular data available.
Parasitic on living leaves. Sexual morph: Ascostromata superficial, discoid or cupulate, dimidiate-scutate, solitary, gregarious, black, stipitate immersed in host tissue, multi-loculate. Ascomata globose to subglobose, oval, with thickened walls. Peridium comprising dark to black cells of prismatica-angularis, inner layer composed of a gelatinous membrane, lacking pseudoparaphyses. Asci 8-spored, bitunicate, fissitunicate, saccate-oblong to ellipsoidal, sessile, apically thickened, with a small ocular chamber. Ascospores 2-seriate overlapping in the ascus, ellipsoidal-oblong to clavulate, uniseptate, darkened at the septum, hyaline to pale-brown. Asexual morph: Unknown (adapted from Boonmee et al. 2017).
Type species: Coccoidella scutula (Berk. & M.A. Curtis) Höhn.
Notes: Coccoidella is characterised by superficial, discoid or cupulate ascostromata, saccate-oblong to ellipsoidal asci and ellipsoidal-oblong to clavulate, uniseptate ascospores. Höhnel (1909) placed Coccoidella in Coccoideaceae based on morphology. Hyde et al. (2013) accepted Coccoidella in Coccoideaceae. Coccoidella differs from Coccoidea in having ellipsoidal-oblong to clavate asci, and hyaline-pale brown ascospores while Coccoidea has slightly oval asci septate at the lower end and yellowish brown to light brown ascospores. Coccoidella is a distinct genus in Coccoideaceae but lacks molecular data.
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