Nutlets are "Densely papillate, attachment scar edges +- raised, abutted near tip, narrow-gapped below, triangular-flared-gapped at base"... "Nutlet generally 1"..."style extended +- 3/4 nutlet length." Photo1-2 shows nutlet texture and scar. Photo 3 shows the 1 mature nutlet and 3 aborted nutlets, along with style length relative to the aborted nutlet size
Calyx with one hair type, spreading in fruit. See photos 4,5 and 10-14 for traits.
habitat gravelly streambanks, gravel bars, generally foothill woodland. Shown in last photo