Fig 37. [Lady's Thumb. Polygonum Persicaria] L.
![[Lady's Thumb. Polygonum Persicaria]](#1525880611323293367_fig-037.jpg.id-7349695216958036832.wrap-0.html.html){kind=link}
Lady's Thumb. Polygonum Persicaria L. Achene shining, jet-black, surface finely uneven, much flattened with rounded edges or with 3 nearly equal concave faces, the edges faintly angled along the center, broadly ovate, base obtuse or bearing a portion of the calyx, apex abruptly pointed, 2–2.3 long. Introduced from Europe. Waste places and stubble ground.
Fig 38. [Climbing False Buckwheat. Polygonum scandens] L.
![[Climbing False Buckwheat. Polygonum scandens]](#1525880611323293367_fig-038.jpg.id-1320493648035199998.wrap-0.html.html){kind=link}
Climbing False Buckwheat. Polygonum scandens L. Achene black, shining, in cross-section sides flat or concave, corners rounded, obovate, in vertical outline sides rounded to an obtuse apex, from rounded sides to base slightly concave, base acute, 3.5–4 mm. long when freed from the persistent base of the calyx. Woods and shady places. Not prominent as a weed.
