Book published 1825.

Authored by John Sibthorp, Sir James Edward Smith

"Flora Graæca: sive Plantarum Rariorum Historia quas in Provinciis aut Insulis Græciæ"
Vol. 1: 1806
Vol. 2: 1813
Vol. 3: 1819
Vol. 4: 1823
Vol. 5: 1825
Vol. 6: 1828
Vol. 7: 1830
Vol. 8: 1833
Vol. 9: 1837
Vol. 10: 1840
Volumes 1-7 was published by J.E. Smith based on intial work by J. Sibthorp. Volumes 8-10 by John Lindley. All published in London.
According to "Taxonomic Literature", by Frans A. Stafleu & Richard S. Cowan, Vol. 5, 1985, p. 579:
Vol. 5 fasc 1: p. 1-38, Pl. 401-450 (1825)
Vol. 5 fasc. 2: p. 39-81, Pl. 451-500 (1825)
Vol. 6 fasc. 1: p. 1-42, Pl. 501-550 (1825)
Vol. 6 fasc. 2: p. 43-80, Pl. 551-600 (1827)