.. Apocynum cannabinum. Apocynum androsaemifolium. Asclepias cornuti. Cananga odorata, Hook. fil. Illicium religiosum. Illicium anisatum. Jaborandi leaves. Apex and transverse section. Jaborandi. False Jaborandi. Apex and transverse section. Rhus. Bark of the root Rhus aromatica, Aiton. Rhus. Leaves of Rhus aromatica, Aiton. Rubus villosus (Blackberry). Rubus villosus. Bark of the root. Rubus villosus. Bark of the root. Sanguinaria canadensis, Fig. 1-3, 5, A-B. Sanguinaria canadensis, Fig. 4. Senega. False senega root: transverse and longitudinal section to center. Senega. Senega root: transverse and longitudinal section to center. Silphium root, Fig. A, C, and D. Silphium root, Fig. B: Longitudinal section of root. Sponge. Fig. 1. - Sponge (one-half natural size) attached to rock. Sponge. Fig. 2. - Living sponges. Sponge. Fig. 3. - Spicules of various forms. Book Navigation ‹ Varieties. up Apocynum cannabinum. Apocynum androsaemifolium. ›