Weed
common sowthistle, sow-thistle, common sow-thistle, annual sowthistle, pualele, sow thistle
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.
Long obovateObovate:
Inverted egg shaped with apical end the broadest.
Yellowish to brown
Ribs and interspaces tuberculateTuberculate:
Having small pimple-like protuberances.
Longitudinal ribs; base and apexApical:
The distal end of the fruit or seed away from the point of attachment or attachment scar.
narrow.
AchenesAchene:
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. long obovateObovate:
Inverted egg shaped with apical end the broadest. and compressed. Approximately four longitudinal ribs with line width and interspaces about equal. Strong cross reticulations on both ribs and interspaces. Small pappusPappus:
Modified calyx in Asteraceae, composed of hairs, bristles, awns, or scales. The pappus-like structure attached to milkweed seeds is termed a coma. 
and basalBasal:
The base of the fruit or seed opposite the apical end.
attachments. Color yellow to brown.
Not listed
Included
Asteraceae
Sonchus oleraceus L.
