[739] Roxburgh, Fl. Ind.; Piddington, Index.
[740] Reichenbach gives good figures of both species in his Icones Fl. Germ., 657, 658.
[741] Fraas, Syn. Fl. Class., p. 236; Lenz, Bot. der Alten Gr. und Röm., p. 419; Ritter, Erdkunde, xvii. p. 482; Hehn, Culturpflanzen, edit. 3, p. 336.
[742] Boissier, Fl. Orient., iv. p. 1153 (published 1879).
[743] Ledebour, Fl. Ross., iii. p. 641.
[744] Steven, Verseichniss d. Taur. Halb. Pflan., p. 313.
[745] Tchihatcheff, trans. of Grisebach’s Végétation du Globe, i. 424.
[746] Heldreich, Nutzpflanzen Griechenlands, p. 19.
[747] Bertoloni, Flora Ital., x. p. 179; Viviani, Fl. Dalmat., i. p. 220; Willkomm and Lange, Prodr. Fl. Hisp., i. p. 250.
[748] Humboldt, Nouvelle Espagne, ed. 2, p. 487.