Note 9 — BOTANICAL AND PHYSIOLOGICAL ASPECTS OF PEYOTE
Reading edition
The best histological account is in Rouhier, Monographie, 34-42; the work of Dr. Helia Bravo, Nota acerca de la Histología, is more recent. Richard Schultes at Harvard has also pursued histological studies. It is noteworthy that the Indians ordinarily take only the upper portion of the plant, which contains a larger proportion of the alkaloids according to Rouhier.