Two new species of Costantinella from Hong Kong

Two Costantinella species, collected in Hong Kong, are described and illust rated: Costantinella palmicola sp. nov. from decaying petioles of Livistona chinensis, and C. phragmitis sp. nov. from decaying culms of Phragmites au stralis. Costantinella palmicola has brown, verruculose conidiophores and d istinctly lobed conidiogenous cells. Costantinella phragmitis has olivaceou s-brown, smooth, cylindrical conidiophores, and hyaline, cylindric-clavate conidiogenous cells bearing elongated denticles near the apex. A synopsis o f the morphological characters of all accepted species in Costantinella is provided.