[799] See Gasparin, Cours d’Agric., iv. p. 217.
[800] Boissier, Fl. Orient., iii. p. 710; Oliver, Flora of Trop. Afr., iii. p. 439.
[801] Clarke, Compositæ Indicæ, 1876, p. 244.
[802] Schweinfurth and Ascherson, Aufzählung, p. 283.
[803] Rohlfs, Kufra, in 8vo, 1881.
[804] Ebn Baithar, ii. p. 196.
[805] Pliny, bk. xxi. c. 6.
[806] Royle, Ill. Himal., p. 372.
[807] Index, p. 25.
[808] According to Forskal, Delile, Reynier, Schweinfurth, and Ascherson.