[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.