[1799] Linnæus, Sp. Plant., edit. 2, vol. i. p. 127.
[1800] Bunge, Bull. Soc. Bot. France, 1860, p. 29.
[1801] De Candolle, Physiologie Botanique, ii. p. 696.
[1802] Unger, Die Pflanzen des Alten Ægyptens, p. 31.
[1803] See Rosenmüller, Bibl. Naturgesch.; and Löw, Aramaische Pflanzen Namen, 1881.
[1804] Delile, Pl. Cult, en Égypte, p. 3; Fl. Ægypt. Illus., p. 5.
[1805] Dict. Fr.-Berb., published by the Government.
[1806] Heer, Pflanzen der Pfahlbauten, p. 5, fig. 4; p. 52, fig. 20.
[1807] Messicommer, in Flora, 1869, p. 320.
[1808] Quoted from Sordelli, Notizie sull. Lagozza, p. 32.