Prosopis articulata S. Watson
Family Fabaceae, Subfamily Mimosoideae
NOTE: Only ten seeds of Prosopis articulata were available for examination. Therefore, the description and images in this fact sheet may not be representative of this species’ seeds.
Pods linear, compressed, straight, subfalcate or variously twisted, 10–24 cm long, 5–8 mm wide, ca. 3 mm thick. Stipitate, apex caudate with beak ca. 5 mm long, margins strongly undulate to moniliform, isthmi 1–5 mm wide. Pericarp yellow or tinged with violet, veins are distinct striate or reticulate longitudinal ridges. Articles (seed chambers) number 5–18. Endocarp segments elliptic-fusiform, thin, flexible, smooth, whitish, 1–1.8 cm long, 5–8 mm wide, 2–3 mm thick; mesocarp dry, longitudinally fibrous, bitter. Seeds oriented longitudinally.
Seeds oblong to elliptic or obovate in outline, umbo absent, 5–8 mm long, 2.9–5 mm wide, 1.5–2.5 mm thick, elliptic in cross section. Pleurogram often with narrow border of noticeably lighter color than testa. Lens a light-colored mound.
Mexico, United States: Arizona
stony and sandy mesas or plains
Prosopis articulata is a thorny shrub or small tree 2–15 m tall. Hybridization may occur with P. velutina Woot.