Weed
spotted ladysthumb
AcheneAchene:
A dry, hard, one-chambered, one-seeded indehiscent fruit, as in buckwheat (Fagopyrum) or sunflower (Helianthus). The fruit wall is not united with the seed coat.
Compressed obovateObovate:
Inverted egg shaped with apical end the broadest.
Black
Smooth and shiny
Remnants of floral parts at the base. ApexApical:
The distal end of the fruit or seed away from the point of attachment or attachment scar.
pointed.
AcheneAchene:
A dry, hard, one-chambered, one-seeded indehiscent fruit, as in buckwheat (Fagopyrum) or sunflower (Helianthus). The fruit wall is not united with the seed coat. is mostly two-sided but occasionally one side will have a low ridge located in its center. ApexApical:
The distal end of the fruit or seed away from the point of attachment or attachment scar. is slightly longer and more pointed than the base.
Not listed
Included
Polygonaceae
Polygonum persicaria L.
Persicaria maculata (Raf.) Gray
Persicaria maculosa Gray
Persicaria persicaria (L.) Small, nom. inval.
Persicaria puritanorum (Fernald) Soják
Persicaria ruderalis (Salisb.) C.F. Reed
Persicaria ruderalis (Salisb.) C.F. Reed var. vulgaris (Webb & Moq.) C.F. Reed
Persicaria vulgaris Webb & Moq.
Polygonum dubium Stein
Polygonum fusiforme Greene
Polygonum minus auct. non Huds.
Polygonum minus Huds. var. subcontinuum (Meisn.) Fernald
Polygonum persicaria L. var. angustifolium Beckh.
Polygonum persicaria L. var. ruderale (Salisb.) Meisn.
Polygonum puritanorum Fernald
