Scope and Content: In 1852 the New Orleans Medical and Surgical Journal published an abridged version of the manuscript, entitled “Catalogus florae Ludovicianae.” An annotated copy of this article is held in the Gray Herbarium Library (call number: FL 73 R43 (3)). It bears a note in Sereno Watson’s handwriting: “The MSS. of ‘Plants of Louisiana,’ now in Herb. Gray, differs only in having the localities, with descriptions of the ‘new species,’ which with the accompanying figures or specimens are in place in the...