Abstract
Abstract A description is provided for Calonectria quinqueseptata . Information is included on the disease caused by the organism, its transmission, geographical distribution, and hosts. HOSTS: Annona, Camellia sinensis, Eucalyptus, Eugenia caryophyllata and Hevea . DISEASE: Reported as causing a severe attack on clove seedlings. Leaf spots are circular, red at the periphery with a whitish centre. In severe attacks extensive brown patches appear and under humid conditions the clove leaves turn black (30, 431). Causes a leaf spot of Annona squamosa and damping-off of Eucalyptus (47, 765). On rubber minute chlorotic spots appear on immature leaves, becoming purplish-brown with a yellow halo. Older lesions have a dark brown margin with a white papery centre; the leaves become brittle but are not shed; the disease is severe in budwood nurseries only after pruning when subsequent flushing occurs in wet weather (52, 221). Causes a rare and minor leaf spot of Eucalyptus robusta and tea in Mauritius. GEOGRAPHICAL DISTRIBUTION: Brazil, Indonesia, W. Malaysia and Mauritius. TRANSMISSION: Probably by wind-borne conidia.
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