Origin of Cultivated Plants, The International Scientific Series Volume XLVIII

Note 1564 — Chapter V

Reading edition

Humboldt, Voy., ii. p. 511; Kunth, in Humboldt and Bonpland, Nova Genera, v. p. 316; Martius, Ueber den Cacao, in Büchner, Repert. Pharm.

Explore with AITake your curiosity a little further.