VAHL, MARTIN. Symbolae botanicae. Copenhagen: 1790-1794. 3 parts in 2 volumes, folio, 415 x 260mm., contemporary half sheep, spine and extremities worn. FIRST EDITION. 75 engraved plates. Nissen BBI 2032. KKM/HSNY, bookplate -- ROTTBÖLL, C.F. Descriptiones et icones rariorum et pro maxima parte novarum plantarum.. editio nova. Copenhagen: 1786. Folio, 405 x 255mm., later cloth-backed boards, title, three preliminary leaves and about 4 plates with old dampstaining. 21 engraved plates. KKM/HSNY, bookplate -- And 3 others. (6)