[139] Dr. Sagot gives interesting details on the method of cultivation, the product, etc., in the Journal Soc. d’Hortic. de France, second series, vol. v. pp. 450-458.
[140] Humboldt, Nouvelle Espagne, edit. 2, vol. ii. p. 470.
[141] Meyen, Grundrisse Pflanz. Geogr., p. 373.
[142] Boissier, Voyage Botanique en Espagne.
[143] Boyer, Hort. Maurit., p. 225.
[144] Choisy, in Prodromus, p. 338.
[145] Marcgraff, Bres., p. 16, with illustration.
[146] Sloane, Hist. Jam., i. p. 150; Hughes, Barb., p. 228.
[147] Clusius, Hist., ii. p. 77.
[148] Ajes was a name for the yam (Humboldt, Nouvelle Espagne).