Milton says, “Thick as autumnal leaves that strew the brooks in Vallombrosa” (Paradise Lost, i. 302); but as the trees of Vallombrosa are chiefly pines, they do not strew the brooks with autumnal leaves. The beech and chestnut trees are by no means numerous.
Source: Dictionary of Phrase and Fable, E. Cobham Brewer, 1894
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