Albonectria rigidiuscula (Berk. & Broome) Rossman & Samuels 1999

Scoleconectria tetraspora Seaver, sp. nov
Perithecia in dense, cespitose clusters 0.5-2 mm. in diameter, seated on an indistinct stroma, superficial on the surface of the substratum, globose or subglobose, often with the ostiolum slightly collapsed or entire, covered externally with conspicuous, bran-like, whitish outgrowths, giving the plants a decidedly verrucose appearance, pale-orange, about 250300 11 in diameter ; asci broadly clavate, 75-80 X 10-12 jU, 4-spored ; spores 1-seriate or crowded near the center of the ascus, with the ends overlapping, ellipsoid, or with the ends slightly narrowed, straight or a little curved, hyaline and more or less granular within, distinctly
3-septate, 25-28X8-10^.
Type collected on cacao trunks at Port Maria, Jamaica, November 14, 1902, F. S. Earle 455 (herb. N. Y. Bot. Card.).
Distribution : Known only from the type locality.

Albonectria rigidiuscula is a fungal plant pathogen. The anamorph of A. rigidiuscula the fungus Fusarium decemcellulare is associated with inflorescence wilt and vascular necrosis in fruit tree crops such as Mango (Mangifera indica), Longan (Dimocarpus longan) and Rambutan (Nephelium lappaceum). F. decemcellulare causes a disease known as cushion gall in Theobroma cacao and other tropical trees.