Botanical watercolour drawings commissioned by the botanist Alexander Anderson, relating to the St. Vincent Botanic Garden of which he was Superintendent. These artworks are of various size and most have pencilled determinations underneath, which are possibly contemporary and therefore differ from current scientific names. The artworks are mostly unsigned although eleven are signed "John Tyley del". The dates are taken from Anderson's tenure as Superintendent of The St. Vincent Botanic Garden.

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