palms with lethal yellow,for dwarf-type coconut cultivars (e.g., ‘Malayan Green), leaves generally turn a reddish to grayish-brown rather than yellow (Figure 6). Leaflets on the green form of the Malayan Dwarf cultivar may be folded around the midvein (Figure 7). Sometimes, affected leaves appear flaccid,hanging down around the trunk of the tree, giving an overall wilted appearance to the palm canopy.The first obvious symptom on mature palms (those able to produce fruit) is a premature drop of most or all fruits. For coconuts, the calyx end of the nut (fruit) will usually develop a brown to black, water-soaked appearance (Figure 1). Nut or fruit-fall is accompanied or followed by flower necrosis. This symptom is most readily observed on newly mature flowers as they emerge from the spathe (Figure 2). Male flowers abscise, and no fruit is set.