Twined, bowl shape. Per Ralph Shanks: Materials are shoot warps, conifer root weft, background overlay of beargrass and design overlay of maidenhair fern. Designs are double sided overlay. Designs are in three horizontal bands with the largest of the designs in the shape of slanted parallelograms. Up to the right slant of weft twist. Achumawi, Atsugewi, or Yana attribution.