[2], [v]-viii, 15 pp. + 35 (of 50) copper-engraved floral plates; designed by Turpin and Poiteau, engraved by Plée and V. Plée fils. 13½x9¾, loose original leaves and plates, unbound.

First and only edition, unbound, of the only published installment of this work, by the one of the major French botanists, Augustin Pyramus de Candolle (1778-1841), author of the famous Liliaceae. Lacks 15 plates, including Nos. 15-23, 27-31 and 44. Complete copies are exceedingly rare and sell for very high prices. Stafleu & Cowan 989; DSB III, pp. 43-45.