Abstract
Abstract A description is provided for Rosellinia arcuata . Information is included on the disease caused by the organism, its transmission, geographical distribution, and hosts. HOSTS: Plurivorous; important on Camellia sinensis . DISEASE: Black root rot mainly of tropical and subtropical woody hosts; plurivorous but only of serious importance on tea ( Camellia sinensis ). The advancing edge of the mycelium is white, shading to black. On the root surface the black network of strands gives a woolly appearance and beneath the bark star-like fans of white mycelium spread out on the wood. On tea the fungus may spread up the stem fan a short distance; the bush often dies suddenly, the leaves remaining attached for some time. GEOGRAPHICAL DISTRIBUTION: Records of this fungus are apparently infrequent. It has been reported from Central African Republic, Hong Kong, India, Indonesia (Java, Sumatra), Kenya, Papua New Guinea, Sri Lanka, Zaire Republic. TRANSMISSION: As mycelium from surface organic litter and woody debris and possibly also through spores.
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