Photo: Cola nitida 4.
Photo: Cola nitida 3.
Photo: Cola nitida 2.
Fig. 155. Crystals of Caffeine.
Classic texts: King's 1898: The Images.
Fig. 154. Sterculia acuminata.
Classic texts: King's 1898: The Images.
Fig. 176. Cola (Kola nut).
Classic texts: Sayre 1917: the pics.