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. 2020 Jan 12;29(2):248–257. doi: 10.1097/MNH.0000000000000590

FIGURE 1.

FIGURE 1

Cannabis sativa W.O.Müll. (A) flowering male and (B) seed-bearing female plant, actual size; (1) male flower, enlarged detail; (2) and (3) pollen sac of same from various angles; (4) pollen grain of same; (5) female flower with cover petal; (6) female flower, cover petal removed; (7) female fruit cluster, longitudinal section; (8) fruit with cover petal; (9) same without cover petal; (10) same; (11) same in cross-section; (12) same in longitudinal section; (13) seed without hull. From Franz Eugen Köhler's Medizinal-Pflantzen. Published and copyrighted by Gera-Untermhaus, FE Köhler in 1887 (1883–1914). Original figure is now in the public domain. https://commons.wikimedia.org/wiki/File:Cannabis_sativa_Koehler_drawing.jpg.